Taxotere

Taxanes

Hazardous Drugs Classification
NIOSH 2016 List: Group 1
NIOSH (Draft) 2020 List: Table 1
Observe and exercise appropriate precautions for handling, preparation, administration, and disposal of hazardous drugs.
Use double chemotherapy gloves and a protective gown. Prepare in a biological safety cabinet or compounding aseptic containment isolator with a closed system drug transfer device. Eye/face and respiratory protection may be needed during preparation and administration.
Emetic Risk
Low
Administer routine antiemetic prophylaxis prior to treatment.
Extravasation Risk
Vesicant
Administer drug through a central venous line.
If docetaxel comes into contact with the skin, wash thoroughly with soap and water; wash/flush area with water if docetaxel comes into contact with mucosa.

Visually inspect parenteral products for particulate matter and discoloration prior to administration whenever solution and container permit.

Docetaxel is available as 10 mg/mL or 20 mg/mL vials from multiple manufacturers; check the concentration prior to calculating the volume of drug needed.
Further dilution is required prior to administration.
Recommended vial dilutions (1 or 2 vial formulation), size of needle for vial content withdrawal (18- to 21-gauge needle), multi-dose vial storage, and storage following dilution differ among products; refer to the manufacturer package insert for specific instructions.
Do NOT mix the contents of the 2-vial formulation with the 1-vial formulation.
Do not use plasticized PVC equipment or devices to prepare or infuse docetaxel; di-2-ethylhexyl phthalate (DEHP) may leach from PVC infusion bags or sets.
Premedication with oral dexamethasone should be administered starting the day before docetaxel to reduce the incidence and severity of fluid retention and hypersensitivity reactions.
Dilution:
If applicable, allow docetaxel solution vials to stand at room temperature for approximately 5 minutes before use.
Prepare and store diluted docetaxel admixtures in bottles (glass, polypropylene) or plastic (non-PVC) bags (polypropylene, polyolefin).
Aseptically withdraw the calculated amount of docetaxel with a calibrated syringe and inject into a 250 mL infusion bag or bottle of 0.9% sodium chloride or 5% dextrose to a final concentration of 0.3 to 0.74 mg/mL; dilute in a larger volume for docetaxel doses greater than 200 mg.
Thoroughly mix the infusion by gentle manual rotation.
Storage after dilution (Taxotere and the following generics: Accord, Actavis, Armas, Dr. Reddy's, Hikma, Sagent, Sun Pharma, Winthrop): After dilution, docetaxel may be stored at 2 to 25 degrees C (36 to 77 degrees F) for up to 6 hours (including the 1 hour for IV administration). Physical and chemical in-use stability of the infusion solution has also been demonstrated in non-PVC bags for up to 48 hours when stored between 2 and 8 degrees C (36 and 46 degrees F).
Storage after dilution (generics including Baxter, Gland Pharma, Hospira, Ingenus, Mylan, Sandoz): After dilution, docetaxel may be stored at 2 to 25 degrees C (36 to 77 degrees F) for up to 4 hours (including the 1 hour for IV administration).
Intravenous (IV) Infusion:
Administer IV over 1 hour using a polyethylene-lined administration set.
Monitor patients closely for hypersensitivity reactions, especially during the first and second infusions. Discontinue the docetaxel infusion and administer supportive therapy in patients who develop a severe hypersensitivity reaction.[60484]

neutropenia / Delayed / 65.0-94.0
leukopenia / Delayed / 32.0-49.0
stomatitis / Delayed / 1.0-39.0
infection / Delayed / 0-33.0
anemia / Delayed / 4.0-31.0
asthenia / Delayed / 13.0-25.0
diarrhea / Early / 2.0-20.0
thrombocytopenia / Delayed / 0-17.0
nausea / Early / 0-14.0
dysphagia / Delayed / 0-13.0
odynophagia / Delayed / 0-13.0
esophagitis / Delayed / 0-13.0
anorexia / Delayed / 1.0-12.0
alopecia / Delayed / 0-11.0
serious hypersensitivity reactions or anaphylaxis / Rapid / 1.0-10.0
heart failure / Delayed / 0-8.1
fever / Early / 0-8.0
vomiting / Early / 0-8.0
fluid retention / Delayed / 0-6.5
GI bleeding / Delayed / 0-6.0
dizziness / Early / 0-5.0
abdominal pain / Early / 0-5.0
lethargy / Early / 0-5.0
fatigue / Early / 0-5.0
myocardial infarction / Delayed / 0-2.0
dyspepsia / Early / 0-2.0
myalgia / Early / 0-2.0
weight loss / Delayed / 0-2.0
rash / Early / 0-1.0
exfoliative dermatitis / Delayed / 0-1.0
acute respiratory distress syndrome (ARDS) / Early / 0-1.0
pulmonary fibrosis / Delayed / 0-1.0
peripheral vasodilation / Rapid / 0-1.0
syncope / Early / 0-1.0
dysgeusia / Early / 0-1.0
constipation / Delayed / 0-1.0
arthralgia / Delayed / 0-1.0
leukemia / Delayed / 0-0.4
disseminated intravascular coagulation (DIC) / Delayed / Incidence not known
Stevens-Johnson syndrome / Delayed / Incidence not known
toxic epidermal necrolysis / Delayed / Incidence not known
acute generalized exanthematous pustulosis (AGEP) / Delayed / Incidence not known
erythema multiforme / Delayed / Incidence not known
cardiac tamponade / Delayed / Incidence not known
pleural effusion / Delayed / Incidence not known
atrial flutter / Early / Incidence not known
atrial fibrillation / Early / Incidence not known
ventricular tachycardia / Early / Incidence not known
bronchospasm / Rapid / Incidence not known
anaphylactic shock / Rapid / Incidence not known
seizures / Delayed / Incidence not known
ileus / Delayed / Incidence not known
GI obstruction / Delayed / Incidence not known
peptic ulcer / Delayed / Incidence not known
GI perforation / Delayed / Incidence not known
ischemic colitis / Early / Incidence not known
typhlitis / Delayed / Incidence not known
enterocolitis / Delayed / Incidence not known
hepatotoxicity / Delayed / Incidence not known
new primary malignancy / Delayed / Incidence not known
lymphoma / Delayed / Incidence not known
renal failure (unspecified) / Delayed / Incidence not known
pulmonary embolism / Delayed / Incidence not known
thrombosis / Delayed / Incidence not known
ototoxicity / Delayed / Incidence not known
hearing loss / Delayed / Incidence not known
tumor lysis syndrome (TLS) / Delayed / Incidence not known

edema / Delayed / 13.0-67.0
elevated hepatic enzymes / Delayed / 0-18.9
hyperbilirubinemia / Delayed / 0-8.9
dyspnea / Early / 0-3.0
hypotension / Rapid / 1.9-2.8
phlebitis / Rapid / 0-1.0
pneumonitis / Delayed / 0-1.0
bone marrow suppression / Delayed / Incidence not known
bleeding / Early / Incidence not known
bullous rash / Early / Incidence not known
erythema / Early / Incidence not known
palmar-plantar erythrodysesthesia (hand and foot syndrome) / Delayed / Incidence not known
radiation recall reaction / Delayed / Incidence not known
ascites / Delayed / Incidence not known
peripheral edema / Delayed / Incidence not known
sinus tachycardia / Rapid / Incidence not known
angina / Early / Incidence not known
hypertension / Early / Incidence not known
neurotoxicity / Early / Incidence not known
peripheral neuropathy / Delayed / Incidence not known
confusion / Early / Incidence not known
colitis / Delayed / Incidence not known
dehydration / Delayed / Incidence not known
hepatitis / Delayed / Incidence not known
hypocalcemia / Delayed / Incidence not known
hypomagnesemia / Delayed / Incidence not known
hyponatremia / Delayed / Incidence not known
hypokalemia / Delayed / Incidence not known
ethanol intoxication / Early / Incidence not known
chest pain (unspecified) / Early / Incidence not known

amenorrhea / Delayed / 0-62.0
dysosmia / Delayed / 0-20.0
cough / Delayed / 0-12.0
lacrimation / Early / 2.0-11.0
epistaxis / Delayed / 0-6.0
xerosis / Delayed / 0-6.0
injection site reaction / Rapid / 3.0-4.0
onycholysis / Delayed / 0.8-0.8
pruritus / Rapid / Incidence not known
nail discoloration / Delayed / Incidence not known
skin hyperpigmentation / Delayed / Incidence not known
weight gain / Delayed / Incidence not known
back pain / Delayed / Incidence not known
flushing / Rapid / Incidence not known
chills / Rapid / Incidence not known
paresthesias / Delayed / Incidence not known
dysesthesia / Delayed / Incidence not known

Docetaxel is contraindicated in patients with neutropenia (ANC less than 1,500 cells/mm3); patients with thrombocytopenia (platelets less than 100,000 cells/mm3) also should not receive docetaxel therapy. Neutropenia occurs in most patients treated with docetaxel; it may be severe and result in infection. Frequently monitor complete blood counts in all patients. An interruption of therapy, dose reduction, or discontinuation of therapy may be necessary for patients with severe and prolonged neutropenia, febrile neutropenia, or severe infection.[60484]

Use of docetaxel in patients with biliary tract disease or hepatic disease may increase the risk of grade 4 neutropenia, febrile neutropenia, infections, severe thrombocytopenia, severe stomatitis, severe skin toxicity, or toxic death. Monitor bilirubin, AST/ALT, and alkaline phosphatase levels prior to each cycle of docetaxel. Avoid use in patients with a bilirubin level greater than the upper limit of normal (ULN) or with combined transaminase (AST and/or ALT level greater than 1.5 times the ULN) and alkaline phosphatase (AP) elevations (AP level greater than 2.5 times the ULN). Consider a docetaxel dose reduction in patients with isolated transaminase elevations (AST and/or ALT level greater than 1.5 times the ULN).[60484]

Severe fluid retention (e.g., poorly tolerated peripheral edema, generalized edema, pleural effusion requiring urgent drainage, dyspnea at rest, cardiac tamponade, and/or pronounced abdominal distention due to ascites) has occurred in patients treated with docetaxel despite premedication with 3 days of corticosteroids. Premedicate patients with oral corticosteroids prior to each docetaxel administration to reduce the incidence and severity of fluid retention. Closely monitor patients with pre-existing effusions for signs of a possible exacerbation. Docetaxel-related fluid retention was completely, but sometimes slowly, reversible with a median of 16 weeks from the last infusion of docetaxel to resolution (range, 0 to 42 weeks). Treat peripheral edema with standard measures (e.g., salt restriction, oral diuretics).

Docetaxel at a dose of 100 mg/m2 in patients with locally advanced or metastatic non-small cell lung cancer (NSCLC) and a history of prior platinum-based chemotherapy was associated with increased treatment-related mortality (14% and 5% in two randomized, controlled studies). There were 2.8% treatment-related deaths among the 176 patients treated at the 75 mg/m2 dose in randomized trials; 3 of these 5 patients had an ECOG performance status of 2 at study entry. The 100 mg/m2 dose was also associated with deaths possibly or probably related to treatment in 2% of metastatic breast cancer patients with normal baseline liver function (n = 965), both previously treated and untreated, and in 11.5% of patients with various tumor types who had abnormal baseline liver function (n = 61). Among patients dosed at 60 mg/m2, treatment-related mortality occurred in 0.6% of patients with normal liver function (n = 481) and in 3 of 7 patients with abnormal liver function. Approximately half of these deaths occurred during the first cycle; sepsis accounted for the majority of deaths.[60484]

Taxotere

Rx

A taxane microtubule inhibitor
Used for certain types of breast cancer, non-small cell lung cancer, gastric cancer, prostate cancer, and head and neck cancer
Oral corticosteroid premedication required prior to each dose to reduce the incidence and severity of hypersensitivity, fluid retention, and skin toxicity

Baseline Hepatic Impairment
Bilirubin level greater than the upper limit of normal (ULN): Avoid use.AST/ALT level greater than 1.5 times the ULN with concurrent alkaline phosphatase (AP) level greater than 2.5 times the ULN: Avoid use.Isolated AST/ALT level greater than 1.5 times the ULN without concurrent AP level elevation: Consider a dose reduction.
Treatment-Related Hepatotoxicity
Gastric or Head and Neck Cancer, in combination with cisplatin and fluorouracil:
AST/ALT level of 2.6 to 5 times the ULN and AP level less than or equal to 2.5 times the ULN, OR AST/ALT level 1.6 to 5 times the ULN and AP level 2.6 to 5 times the ULN: Reduce docetaxel dose by 20%.AST/ALT level greater than 5 times the ULN and/or AP level greater than 5 times the ULN: Discontinue docetaxel.

Specific guidelines for dosage adjustments in renal impairment are not available; it appears that no dosage adjustments are needed.

Acetaminophen; Ibuprofen: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Adagrasib: (Major) Avoid coadministration of docetaxel with adagrasib if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A substrate and adagrasib is a strong CYP3A inhibitor. Concomitant use with another strong CYP3A inhibitor increased docetaxel exposure by 2.2-fold.
Amlodipine; Celecoxib: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Amoxicillin; Clarithromycin; Omeprazole: (Major) Avoid coadministration of docetaxel with clarithromycin if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and clarithromycin is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Apalutamide: (Major) Avoid coadministration of docetaxel with apalutamide due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and apalutamide is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Aprepitant, Fosaprepitant: (Moderate) Aprepitant, fosaprepitant is indicated for the prophylaxis of chemotherapy-induced nausea/vomiting and is often used in combination with docetaxel. However, use caution and monitor for a possible increase in non-emetogenic docetaxel-related adverse effects for several days after administration of a multi-day aprepitant regimen. Docetaxel is a CYP3A4 substrate. Aprepitant, when administered as a 3-day oral regimen (125 mg/80 mg/80 mg), is a moderate CYP3A4 inhibitor and inducer and theoretically may increase plasma concentrations of docetaxel. The AUC of another CYP3A4 substrate, midazolam, was increased when coadministered with aprepitant; however, in a pharmacokinetic study, oral aprepitant (125 mg/80 mg) did not influence the pharmacokinetics of docetaxel. After administration, fosaprepitant is rapidly converted to aprepitant and shares many of the same drug interactions. However, as a single 150 mg intravenous dose, fosaprepitant only weakly inhibits CYP3A4 for a duration of 2 days; there is no evidence of CYP3A4 induction.
Atazanavir: (Major) Avoid coadministration of docetaxel with atazanavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and atazanavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Atazanavir; Cobicistat: (Major) Avoid coadministration of docetaxel with atazanavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and atazanavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold. (Major) Avoid coadministration of docetaxel with cobicistat if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and cobicistat is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Bortezomib: (Minor) Monitor patients for the development of peripheral neuropathy when receiving bortezomib in combination with other drugs that can cause peripheral neuropathy like docetaxel; the risk of peripheral neuropathy may be additive.
Bupivacaine; Meloxicam: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Cabozantinib: (Minor) Monitor for an increase in docetaxel-related adverse reactions if coadministration with cabozantinib is necessary. Docetaxel is a P-glycoprotein (P-gp) substrate. Cabozantinib is a P-gp inhibitor and has the potential to increase plasma concentrations of P-gp substrates; however, the clinical relevance of this finding is unknown.
Carbamazepine: (Major) Avoid coadministration of docetaxel with carbamazepine due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and carbamazepine is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Carvedilol: (Major) Increased concentrations of docetaxel may occur if it is coadministered with carvedilol; exercise caution. Carvedilol is a P-glycoprotein (P-gp) inhibitor and docetaxel is a P-gp substrate.
Celecoxib: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Celecoxib; Tramadol: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Ceritinib: (Major) Avoid coadministration of docetaxel with ceritinib if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and ceritinib is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Chloramphenicol: (Major) Avoid coadministration of docetaxel with chloramphenicol if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and chloramphenicol is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Chlorpheniramine; Ibuprofen; Pseudoephedrine: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Cholera Vaccine: (Moderate) Patients receiving immunosuppressant medications may have a diminished response to the live cholera vaccine. When feasible, administer indicated vaccines prior to initiating immunosuppressant medications. Counsel patients receiving immunosuppressant medications about the possibility of a diminished vaccine response and to continue to follow precautions to avoid exposure to cholera bacteria after receiving the vaccine.
Ciprofloxacin: (Moderate) The plasma concentrations of docetaxel may be elevated when administered concurrently with ciprofloxacin. Clinical monitoring for adverse effects, such as myelosuppression and neurologic toxicity, is recommended during coadministration. Ciprofloxacin is a CYP3A4 inhibitor, while docetaxel is a CYP3A4 substrate.
Clarithromycin: (Major) Avoid coadministration of docetaxel with clarithromycin if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and clarithromycin is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Cobicistat: (Major) Avoid coadministration of docetaxel with cobicistat if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and cobicistat is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Cyclosporine: (Major) Cyclosporine is a substrate and inhibitor of P-glycoprotein, an energy-dependent drug efflux pump encoded for by the multidrug resistance gene-1 (MDR1). Overexpression of this protein has been described as a mechanism of resistance to naturally-occurring (non-synthetic) chemotherapy agents. Cyclosporine may enhance the efficacy of the certain chemotherapy agents including docetaxel, paclitaxel, and vinca alkaloids by inhibiting this protein. Cyclosporine can block MDR1-mediated resistance when given at much higher doses than those used in transplantation. The addition of cyclosporine may also enhance the efficacy and/or toxicity of these chemotherapy regimens by other mechanisms. The addition of cyclosporine may increase the AUC values of these chemotherapy agents due to a decrease in either chemotherapy metabolism or clearance, or due to an increase in the intracellular concentrations of the chemotherapy agent.
Daclatasvir: (Moderate) Systemic exposure of docetaxel, a P-glycoprotein (P-gp) substrate, may be increased when administered concurrently with daclatasvir, a P-gp inhibitor. Taking these drugs together could increase or prolong the therapeutic effects of docetaxel; monitor patients for potential adverse effects.
Dalfopristin; Quinupristin: (Moderate) Caution is warranted during coadministration of docetaxel and dalfopristin; quinupristin, as the systemic exposure of docetaxel may be increased resulting in increased treatment-related adverse reactions. Docetaxel is a CYP3A4 substrate; dalfopristin; quinupristin is a weak CYP3A4 inhibitor.
Darunavir: (Major) Avoid coadministration of docetaxel with darunavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and darunavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Darunavir; Cobicistat: (Major) Avoid coadministration of docetaxel with cobicistat if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and cobicistat is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold. (Major) Avoid coadministration of docetaxel with darunavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and darunavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Darunavir; Cobicistat; Emtricitabine; Tenofovir alafenamide: (Major) Avoid coadministration of docetaxel with cobicistat if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and cobicistat is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold. (Major) Avoid coadministration of docetaxel with darunavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and darunavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Delavirdine: (Major) Avoid coadministration of docetaxel with delavirdine if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and delavirdine is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Diclofenac: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Diclofenac; Misoprostol: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Diflunisal: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Diphenhydramine; Ibuprofen: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Diphenhydramine; Naproxen: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Doxorubicin Liposomal: (Minor) Docetaxel appears to cause sequence-related drug interactions with doxorubicin. Antagonism may occur if docetaxel and doxorubicin are administered simultaneously, and when doxorubicin was added prior to docetaxel.
Doxorubicin: (Minor) Docetaxel appears to cause sequence-related drug interactions with doxorubicin. Antagonism may occur if docetaxel and doxorubicin are administered simultaneously, and when doxorubicin was added prior to docetaxel.
Dronedarone: (Major) Docetaxel is a substrate for CYP3A4 and P-gp and dronedarone is metabolized by and is an inhibitor of CYP3A; dronedarone also inhibits P-gp. The concomitant administration of dronedarone with CYP3A4 and P-gp substrates may result in increased exposure of the substrate; concomitant use of these agents should be used with extreme caution and possibly avoided in elderly patients. Fatal pan mucositis was reported in an elderly patient who was receiving docetaxel for metastatic prostate cancer and dronedarone to control atrial fibrillation in a case report. This 79-year-old man presented to the hospital with grade 4 mucositis and febrile neutropenia following his third cycle of docetaxel after receiving dronedarone for appoximately 6 weeks. Despite neutrophil recovery, he experienced skin and cutaneous lesion deterioration, grade 4 stomatitis, necrotic conjunctivitis, and grade 4 keratitis; no infectious etiology for mucositis was identified. A docetaxel level of 2.4 ng/ml was detected 14 days after the last infusion; this detectable docetaxel level was unexpected. The patient subsequently died of ICU-acquired sepsis. Consider using an alternate antiarrhythmic agent in patients receiving docetaxel. Following a risk/benefit analysis, if docetaxel is administered in a patient who also requires dronedarone, monitor patient for signs of severe stomatitis/mucositis or cutaneous reactions and other serious side effects associated with docetaxel (eg, paresthesias/dysesthesias, asthenia, febrile neutropenia, infection).
Efavirenz: (Moderate) Efavirenz induces CYP3A4 and may decrease serum concentrations of drugs metabolized by this enzyme, such as docetaxel.
Efavirenz; Emtricitabine; Tenofovir Disoproxil Fumarate: (Moderate) Efavirenz induces CYP3A4 and may decrease serum concentrations of drugs metabolized by this enzyme, such as docetaxel.
Efavirenz; Lamivudine; Tenofovir Disoproxil Fumarate: (Moderate) Efavirenz induces CYP3A4 and may decrease serum concentrations of drugs metabolized by this enzyme, such as docetaxel.
Elagolix: (Moderate) Monitor for decreased docetaxel efficacy when coadministration with elagolix is necessary. Docetaxel exposure may be decreased during concurrent use. Elagolix is a weak to moderate CYP3A4 inducer and docetaxel is a CYP3A4 substrate.
Elagolix; Estradiol; Norethindrone acetate: (Moderate) Monitor for decreased docetaxel efficacy when coadministration with elagolix is necessary. Docetaxel exposure may be decreased during concurrent use. Elagolix is a weak to moderate CYP3A4 inducer and docetaxel is a CYP3A4 substrate.
Elbasvir; Grazoprevir: (Moderate) Administering docetaxel with elbasvir; grazoprevir may result in elevated docetaxel plasma concentrations. Docetaxel is a substrate of CYP3A; grazoprevir is a weak CYP3A inhibitor. If these drugs are used together, closely monitor for signs of adverse events.
Elexacaftor; tezacaftor; ivacaftor: (Moderate) Monitor for docetaxel-related adverse reactions during coadministration of elexacaftor; tezacaftor; ivacaftor as concurrent use may increase exposure of docetaxel. Docetaxel is a substrate for the transporters OATP1B1 and OATP1B3; elexacaftor; tezacaftor; ivacaftor may inhibit uptake of OATP1B1 and OATP1B3.
Eliglustat: (Major) Coadministration of docetaxel and eliglustat may result in increased plasma concentrations of docetaxel. If coadministration is necessary, use caution and monitor closely. Docetaxel is a P-glycoprotein (P-gp) substrate; eliglustat is a P-gp inhibitor.
Elvitegravir; Cobicistat; Emtricitabine; Tenofovir Alafenamide: (Major) Avoid coadministration of docetaxel with cobicistat if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and cobicistat is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Elvitegravir; Cobicistat; Emtricitabine; Tenofovir Disoproxil Fumarate: (Major) Avoid coadministration of docetaxel with cobicistat if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and cobicistat is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Enzalutamide: (Major) Avoid coadministration of docetaxel with enzalutamide due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and enzalutamide is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Epirubicin: (Moderate) Monitor for an increase in epirubicin-related adverse reactions, including hematologic and gastrointestinal toxicities, if coadministration with docetaxel is necessary. Coadministration of docetaxel immediately before or after epirubicin had no effect on the systemic exposure of epirubicin. However, the mean AUC of epirubicinol and 7-deoxy-aglycone (inactive metabolites) increased by 22.5% and 95%, respectively, when docetaxel was administered immediately after epirubicin. Epirubicin had no effect on the exposure of docetaxel.
Erlotinib: (Moderate) The use of taxane-based chemotherapy with erlotinib appears to be one of the risk factors for gastrointestinal (GI) perforation with erlotinib. Monitor for symptoms of GI perforation (e.g., severe abdominal pain, fever, nausea, and vomiting) if coadministration of erlotinib with a taxane chemotherapy agent is necessary.
Erythromycin: (Minor) Docetaxel is metabolized by cytochrome P450 3A (CYP3A4 and CYP3A5) enzymes. Erythromycin is a CYP3A4 inhibitor. In vitro studies have shown drugs that inhibit, induce, or are also metabolized by CYP3A enzymes can significantly affect the metabolism of docetaxel. In a small pharmacokinetic study, 7 patients received 2 courses of docetaxel, one with concurrent ketoconazole (docetaxel 10 mg/m2) and one without ketoconazole (docetaxel 100mg/m2). The ketoconazole dosage was 200 mg once daily for 3 days. Concurrent administration of ketoconazole decreased the clearance of docetaxel by 49% as compared to giving docetaxel alone. However, there was large interpatient variability in the reduction in clearance. Use docetaxel cautiously when administered concurrently with inducers or inhibitors of CYP3A enzymes.
Etodolac: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Etravirine: (Moderate) Etravirine is a CYP3A4 inducer/substrate and a P-glycoprotein (PGP) inhibitor and docetaxel is a CYP3A4 and PGP substrate. Caution is warranted if these drugs are coadministered.
Fenoprofen: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Filgrastim, G-CSF: (Major) Filgrastim induces the proliferation of neutrophil-progenitor cells, and, because antineoplastic agents exert their toxic effects against rapidly growing cells, filgrastim is contraindicated for use during the 24 hours before or after cytotoxic chemotherapy.
Fluconazole: (Minor) Docetaxel is metabolized by cytochrome P450 3A enzymes. Drugs that inhibit the CYP3A enzymes, such as fluconazole, can significantly reduce the metabolism of docetaxel. Use docetaxel cautiously when administered concurrently with inhibitors of CYP3A enzymes.
Fluoxetine: (Minor) Docetaxel is metabolized by cytochrome P450 3A enzymes. Drugs that inhibit the CYP3A enzymes, such as fluoxetine, can significantly reduce the metabolism of docetaxel.
Flurbiprofen: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Fluvoxamine: (Minor) Docetaxel is metabolized by cytochrome P450 3A enzymes. Drugs that inhibit CYP3A enzymes, such as fluvoxamine, can significantly reduce the metabolism of docetaxel. Use docetaxel cautiously when administered concurrently with inhibitors of CYP3A enzymes.
Fosamprenavir: (Major) Avoid coadministration of docetaxel with fosamprenavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and fosamprenavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Fosphenytoin: (Major) Avoid coadministration of docetaxel with fosphenytoin due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and fosphenytoin is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Glecaprevir; Pibrentasvir: (Moderate) Caution is advised with the coadministration of glecaprevir and docetaxel as coadministration may increase serum concentrations of docetaxel and increase the risk of adverse effects. Docetaxel is a substrate of P-glycoprotein (P-gp); glecaprevir is a P-gp inhibitor. (Moderate) Caution is advised with the coadministration of pibrentasvir and docetaxel as coadministration may increase serum concentrations of docetaxel and increase the risk of adverse effects. Docetaxel is a substrate of P-glycoprotein (P-gp); pibrentasvir is an inhibitor of P-gp.
Grapefruit juice: (Major) Advise patients to avoid grapefruit juice while on docetaxel due to increased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and grapefruit juice is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Hydrocodone; Ibuprofen: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Ibuprofen: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Ibuprofen; Famotidine: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Ibuprofen; Oxycodone: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Ibuprofen; Pseudoephedrine: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Idelalisib: (Major) Avoid coadministration of docetaxel with idelalisib if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and idelalisib is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Ifosfamide: (Minor) When docetaxel and ifosfamide are given concurrently or in sequence, an apparent decrease in the AUC of ifosfamide is observed due to an increased ifosfamide clearance when docetaxel (over 1 hour) is followed by ifosfamide (over 24 hours). The reverse sequence (ifosfamide over 24 hours followed by docetaxel over 1 hour) does not cause an AUC alteration. The pharmacokinetics of docetaxel were unchanged in either case.
Imatinib: (Moderate) Imatinib is a potent inhibitor of cytochrome P450 3A4 and may increase concentrations of other drugs metabolized by this enzyme including docetaxel.
Indinavir: (Major) Avoid coadministration of docetaxel with indinavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and indinavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Indomethacin: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Isavuconazonium: (Moderate) Concomitant use of isavuconazonium with docetaxel may result in increased serum concentrations of docetaxel. Docetaxel is a substrate of the hepatic isoenzyme CYP3A4 and drug transporter P-glycoprotein (P-gp); isavuconazole, the active moiety of isavuconazonium, is an inhibitor of CYP3A4 and P-gp. Caution and close monitoring are advised if these drugs are used together.
Isoniazid, INH; Pyrazinamide, PZA; Rifampin: (Major) Avoid coadministration of docetaxel with rifampin due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and rifampin is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Isoniazid, INH; Rifampin: (Major) Avoid coadministration of docetaxel with rifampin due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and rifampin is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Itraconazole: (Major) Administration of docetaxel is not recommended during or for 2 weeks after discontinuation of itraconazole treatment due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and itraconazole is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Ketoconazole: (Major) Avoid coadministration of docetaxel with ketoconazole if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and ketoconazole is a strong CYP3A4 inhibitor. Concomitant use with ketoconazole increased docetaxel exposure by 2.2-fold.
Ketoprofen: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Ketorolac: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Lansoprazole; Amoxicillin; Clarithromycin: (Major) Avoid coadministration of docetaxel with clarithromycin if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and clarithromycin is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Ledipasvir; Sofosbuvir: (Minor) Caution and close monitoring of docetaxel-associated adverse reactions is advised with concomitant administration of ledipasvir. Docetaxel is a substrate of the drug transporter P-glycoprotein (P-gp); ledipasvir is a P-gp inhibitor. Taking these drugs together may increase docetaxel plasma concentrations.
Letermovir: (Moderate) Administering letermovir with docetaxel may increase docetaxel concentration and risk for adverse events. Avoid coadministration if the patient is also receiving cyclosporine, because the magnitude of this interaction may be increased. Consider a 50% dose reduction of docetaxel if all 3 drugs must be administered concurrently. Docetaxel is a substrate of CYP3A4. Letermovir is a moderate CYP3A4 inhibitor; however, when given with cyclosporine, the combined effect on CYP3A4 substrates may be similar to a strong CYP3A4 inhibitor. Concurrent administration with a strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold and reduced drug clearance by 49%.
Levoketoconazole: (Major) Avoid coadministration of docetaxel with ketoconazole if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and ketoconazole is a strong CYP3A4 inhibitor. Concomitant use with ketoconazole increased docetaxel exposure by 2.2-fold.
Live Vaccines: (Contraindicated) Do not administer live vaccines to docetaxel recipients; no data are available regarding the risk of secondary transmission of infection by live vaccines in patients receiving docetaxel. At least 2 weeks before initiation of docetaxel therapy, consider completion of all age appropriate vaccinations per current immunization guidelines. Docetaxel recipients may receive inactivated vaccines, but the immune response to vaccines or toxoids may be decreased.
Lonafarnib: (Major) Avoid coadministration of docetaxel with lonafarnib if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and lonafarnib is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Lopinavir; Ritonavir: (Major) Avoid coadministration of docetaxel with ritonavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and ritonavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold. (Moderate) Monitor for docetaxel-related adverse reactions during coadministration with lopinavir as concurrent use may increase exposure of docetaxel. Docetaxel is a substrate of the drug transporter organic anion transporting polypeptide (OATP1B1); lopinavir is an OATP1B1 inhibitor.
Lumacaftor; Ivacaftor: (Major) Avoid coadministration of docetaxel with lumacaftor; ivacaftor due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and lumacaftor is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Lumacaftor; Ivacaftor: (Major) Avoid coadministration of docetaxel with lumacaftor; ivacaftor due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and lumacaftor is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Meclofenamate Sodium: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Mefenamic Acid: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Meloxicam: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Mifepristone: (Major) Avoid coadministration of docetaxel with mifepristone if possible due to increased plasma concentrations of docetaxel. If concomitant use of docetaxel with chronic mifepristone is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. The clinical significance of this interaction with the short-term use of mifepristone for termination of pregnancy is unknown. Docetaxel is a CYP3A4 substrate and mifepristone is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Mitotane: (Major) Avoid coadministration of docetaxel with mitotane due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and mitotane is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Nabumetone: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Naproxen: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Naproxen; Esomeprazole: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Naproxen; Pseudoephedrine: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Nefazodone: (Major) Avoid coadministration of docetaxel with nefazodone if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and nefazodone is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Nelfinavir: (Major) Avoid coadministration of docetaxel with nelfinavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and nelfinavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Netupitant, Fosnetupitant; Palonosetron: (Major) Netupitant; palonosetron is indicated for the prophylaxis of chemotherapy-induced nausea/vomiting; however, docetaxel-related adverse events may be increased. Netupitant is a moderate CYP3A4 inhibitor and docetaxel is a CYP3A4 substrate; the inhibitory effect of netupitant on CYP3A4 can last for multiple days. When coadministered with netupitant, palonosetron, the mean Cmax and AUC of docetaxel were increased by 49% and 35%, respectively, compared to when coadministered with palonosetron alone. The mean AUC of palonosetron was approximately 65% higher when netupitant; palonosetron was coadministered with docetaxel than with etoposide or cyclophosphamide, while the AUC of netupitant was similar among groups.
Nilotinib: (Major) Concomitant use of nilotinib, a moderate CYP3A4 inhibitor, and docetaxel, a CYP3A4 substrate, may result in increased docetaxel levels. A docetaxel dose reduction may be necessary if these drugs are used together.
Nirmatrelvir; Ritonavir: (Major) Avoid coadministration of docetaxel with ritonavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and ritonavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Nonsteroidal antiinflammatory drugs: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Olanzapine; Fluoxetine: (Minor) Docetaxel is metabolized by cytochrome P450 3A enzymes. Drugs that inhibit the CYP3A enzymes, such as fluoxetine, can significantly reduce the metabolism of docetaxel.
Oritavancin: (Moderate) Docetaxel is metabolized by CYP3A4; oritavancin is a weak CYP3A4 inducer. Plasma concentrations and efficacy of docetaxel may be reduced if these drugs are administered concurrently.
Oxaprozin: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Pazopanib: (Moderate) Pazopanib is a weak inhibitor of CYP3A4. Coadministration of pazopanib and docetaxel, a CYP3A4 substrate, may cause an increase in systemic concentrations of docetaxel. Use caution when administering these drugs concomitantly.
Phenobarbital: (Major) Avoid coadministration of docetaxel with phenobarbital due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and phenobarbital is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Phenobarbital; Hyoscyamine; Atropine; Scopolamine: (Major) Avoid coadministration of docetaxel with phenobarbital due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and phenobarbital is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Phenytoin: (Major) Avoid coadministration of docetaxel with phenytoin due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and phenytoin is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Piroxicam: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Posaconazole: (Major) Avoid coadministration of docetaxel with posaconazole if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and posaconazole is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Primidone: (Major) Avoid coadministration of docetaxel with primidone due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and primidone is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Ribociclib: (Major) Avoid coadministration of docetaxel with ribociclib if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and ribociclib is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Ribociclib; Letrozole: (Major) Avoid coadministration of docetaxel with ribociclib if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and ribociclib is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Rifampin: (Major) Avoid coadministration of docetaxel with rifampin due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and rifampin is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Rifapentine: (Major) Avoid coadministration of docetaxel with rifapentine due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and rifapentine is a strong CYP3A4 inducer. Concomitant use with other strong CYP3A4 inducers increased docetaxel metabolism by 2.6-fold to 32-fold.
Ritonavir: (Major) Avoid coadministration of docetaxel with ritonavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and ritonavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Rolapitant: (Moderate) Use caution if docetaxel and rolapitant are used concurrently, and monitor for docetaxel-related adverse effects. Docetaxel is a P-glycoprotein (P-gp) substrate, where an increase in exposure may significantly increase adverse effects; rolapitant is a P-gp inhibitor. When rolapitant was administered with another P-gp substrate, digoxin, the day 1 Cmax and AUC were increased by 70% and 30%, respectively; the Cmax and AUC on day 8 were not studied.
Rufinamide: (Minor) Rufinamide is not metabolized through hepatic CYP isozymes; however, it is a weak inducer of CYP3A4. In theory, decreased exposure of drugs that are extensively metabolized by CYP3A4, such as docetaxel, may occur during concurrent use with rufinamide.
Saquinavir: (Major) Avoid coadministration of docetaxel with saquinavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and saquinavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
SARS-CoV-2 (COVID-19) vaccines: (Moderate) Patients receiving immunosuppressant medications may have a diminished response to the SARS-CoV-2 virus vaccine. When feasible, administer indicated vaccines prior to initiating immunosuppressant medications. Counsel patients receiving immunosuppressant medications about the possibility of a diminished vaccine response and to continue to follow precautions to avoid exposure to SARS-CoV-2 virus after receiving the vaccine.
Sofosbuvir; Velpatasvir; Voxilaprevir: (Moderate) Plasma concentrations of docetaxel, a P-glycoprotein (P-gp) substrate, may be increased when administered concurrently with voxilaprevir, a P-gp inhibitor. Monitor patients for increased side effects if these drugs are administered concurrently.
St. John's Wort, Hypericum perforatum: (Major) Avoid coadministration of docetaxel with St. John's Wort due to decreased plasma concentrations of docetaxel. Docetaxel is a CYP3A4 substrate and St. John's Wort is a strong CYP3A4 inducer. Concomitant use with St. John's Wort increased docetaxel metabolism by 2.6-fold to 32-fold.
Streptogramins: (Moderate) Caution is warranted during coadministration of docetaxel and dalfopristin; quinupristin, as the systemic exposure of docetaxel may be increased resulting in increased treatment-related adverse reactions. Docetaxel is a CYP3A4 substrate; dalfopristin; quinupristin is a weak CYP3A4 inhibitor.
Sulindac: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Sumatriptan; Naproxen: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Tbo-Filgrastim: (Major) Filgrastim induces the proliferation of neutrophil-progenitor cells, and, because antineoplastic agents exert their toxic effects against rapidly growing cells, filgrastim is contraindicated for use during the 24 hours before or after cytotoxic chemotherapy.
Thalidomide: (Moderate) Thalidomide and other agents that cause peripheral neuropathy such as docetaxel should be used cautiously due to the potential for additive effects.
Tipranavir: (Major) Avoid coadministration of docetaxel with tipranavir if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and tipranavir is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Tolmetin: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Tuberculin Purified Protein Derivative, PPD: (Moderate) Immunosuppressives may decrease the immunological response to tuberculin purified protein derivative, PPD. This suppressed reactivity can persist for up to 6 weeks after treatment discontinuation. Consider deferring the skin test until completion of the immunosuppressive therapy.
Tucatinib: (Major) Avoid coadministration of docetaxel with tucatinib if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and tucatinib is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Valdecoxib: (Major) Due to the thrombocytopenic effects of docetaxel, an additive risk of bleeding may be seen in patients receiving concomitant anticoagulants, NSAIDs, platelet inhibitors (including aspirin), strontium-89 chloride, and thrombolytic agents. In addition, large doses of salicylates (>= 3-4 g/day) can cause hypoprothrombinemia, an additional risk factor for bleeding.
Vemurafenib: (Moderate) Concomitant use of vemurafenib and docetaxel may result in altered concentrations of docetaxel. Vemurafenib is an inhibitor of P-glycoprotein (PGP) and an inducer of CYP3A4. Docetaxel is a substrate of PGP and CYP3A4. Use caution and monitor patients for toxicity and efficacy.
Vonoprazan; Amoxicillin; Clarithromycin: (Major) Avoid coadministration of docetaxel with clarithromycin if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and clarithromycin is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Voriconazole: (Major) Avoid coadministration of docetaxel with voriconazole if possible due to increased plasma concentrations of docetaxel. If concomitant use is unavoidable, closely monitor for docetaxel-related adverse reactions and consider a 50% dose reduction of docetaxel. Docetaxel is a CYP3A4 substrate and voriconazole is a strong CYP3A4 inhibitor. Concomitant use with another strong CYP3A4 inhibitor increased docetaxel exposure by 2.2-fold.
Zonisamide: (Minor) Zonisamide is a weak inhibitor of P-glycoprotein (P-gp), and docetaxel is a substrate of P-gp. There is theoretical potential for zonisamide to affect the pharmacokinetics of drugs that are P-gp substrates. Use caution when starting or stopping zonisamide or changing the zonisamide dosage in patients also receiving drugs which are P-gp substrates.

Docetaxel Intravenous Inj Sol: 1mL, 10mg, 20mg
Docetaxel/Taxotere Intravenous Inj Sol Conc: 1mL, 20mg

The suggested maximum tolerated dose (MTD) for docetaxel is dependent on performance status, other chemotherapy agents or radiation given in combination, and disease state. The optimal dose or infusion duration of docetaxel has not been determined. Therefore, dosing may vary from protocol to protocol. If questions arise, clinicians should consult the appropriate references to verify the dose.

100 mg/m2 IV over 1 hour every 3 weeks as a single agent; doses of 100 mg/m2 IV have been associated with toxic deaths in patients with breast and lung cancer (see Adverse Reactions). Doses up to 40 mg/m2 have been given on a weekly basis. The recommended dose of intraperitoneal docetaxel is 100 mg/m2 IP every 3 weeks.

100 mg/m2 IV over 1 hour every 3 weeks as a single agent; doses of 100 mg/m2 IV have been associated with toxic deaths in patients with breast and lung cancer (see Adverse Reactions). Doses up to 40 mg/m2 have been given on a weekly basis. The recommended dose of intraperitoneal docetaxel is 100 mg/m2 IP every 3 weeks.

In a phase I study of children with refractory solid tumors, the MTD for heavily pretreated patients was 65 mg/m2 IV every 3 weeks and 125 mg/m2 IV over 1 hour in less heavily pretreated patients.

In a phase I study of children with refractory solid tumors, the MTD for heavily pretreated patients was 65 mg/m2 IV every 3 weeks and 125 mg/m2 IV over 1 hour in less heavily pretreated patients.

Similar to paclitaxel, docetaxel is an antimicrotubule chemotherapy agent. The mechanism of action of the taxanes differs from the vinca alkaloids, although both bind to tubulin. Docetaxel promotes the assembly of microtubules and stabilizes their formation by inhibiting depolymerization. These microtubules are extremely stable and nonfunctional. In addition to functioning as components of the spindle apparatus within the cell, normal microtubules also maintain cell shape, assist in cellular motility, attachment, and intracellular transport, and modulate interactions with growth factors. Microtubules are in equilibrium with tubulin heterodimers, the building blocks of microtubules, which consist of alpha- and beta-subunits. Microtubule-assembly proteins (MAPs) control the equilibrium between the tubulin heterodimers and microtubules. Docetaxel and paclitaxel have different effects on MAPs, which may explain differences in activity and resistance. Docetaxel binds to microtubules at a site that is different from the binding site of colchicine, epipodophyllotoxins, and vinblastine. In contrast to other tubulin toxins, including paclitaxel, the binding of docetaxel does not alter the number of tubulin heterodimers in the microtubules. Docetaxel also promotes tubulin stabilization in conditions where polymerization would not normally occur and stabilizes microtubules in the presence of cold temperatures. Cell death results from inhibition of normal microtubule processes. In vitro studies show that docetaxel is approximately twice as potent as paclitaxel as an inhibitor of microtubule depolymerization, more active as a promoter of tubulin assembly, and twice as efficient as paclitaxel in stabilizing microtubules against cold-induced depolymerization.[25784] The cytotoxic effect of docetaxel is the prevention of effective cell division. Docetaxel specifically blocks critical components in S-phase that are essential for mitosis. Gross damage is detectable after mitosis, with dysfunction in cytokinesis and accumulation of multinucleated non-viable cells. Docetaxel affects centrosome organization in S-phase, resulting in incomplete mitosis and cell death. It is only partially toxic against cells in mitosis and has minimal toxicity against cells in G1. This leads to an accumulation of cells at the G2/M phase. This differs from paclitaxel, which causes cell damage by affecting the mitotic spindle.[25785]
 
Docetaxel has 1.3 to 12 times more cytotoxic activity in vitro as compared to paclitaxel. This is due to a three-fold decrease in efflux of docetaxel out of cell that results in a higher intracellular concentration of docetaxel. In addition, docetaxel has a higher affinity for microtubules than paclitaxel. There is also evidence that docetaxel and paclitaxel are not completely cross-resistant. Docetaxel cytotoxicity correlates with total dosage as opposed to prolonged exposure. Thus, docetaxel activity is mostly schedule-independent. In vitro concentrations required to reduce murine and human cell line survival by 50% range from 4 to 35 ng/mL, with greater effects on proliferating versus non-proliferating cells.[25784]

Docetaxel is administered by intravenous infusion. Docetaxel is 94% to 97% protein bound, primarily to alpha1-acid glycoprotein, albumin, and lipoproteins. A three-compartment model best describes docetaxel elimination, with an initial rapid distribution phase and late (terminal) phase. The mean steady-state volume of distribution (Vd) was 113 liters. The estimated mean total body clearance is 18 liters/hour/m2 and the mean terminal elimination half-life is 116 hours. Within 7 days of administration of radiolabeled docetaxel to 3 cancer patients, urinary excretion accounted for 6% and fecal excretion 75% of the administered radioactivity. Approximately 80% of the radioactivity recovered in feces is excreted during the first 48 hours as one major and 3 minor metabolites; less than 8% was recovered as unchanged drug.[60484]
 
Affected cytochrome (CYP) 450 isoenzymes and drug transporters: CYP3A4
Docetaxel is metabolized by CYP3A4 in vitro.[60484] All 4 principle metabolites of docetaxel have greatly reduced cytotoxic activity against cancer cell lines in vitro and in vivo.[63757]

Although IV and intraperitoneal administration of docetaxel to mice with B16 melanoma xenografts resulted in considerable activity, oral administration was associated with a total lack of activity, possibly due to intragastric degradation by P-glycoprotein (P-gp).

The AUC of docetaxel in cancer patients was dose proportional following doses of 70 mg/m2 to 115 mg/m2 with infusion times of 1 to 2 hours.

Pregnancy should be avoided by females of reproductive potential during docetaxel treatment and for at least 2 months after the last dose. Although there are no adequately controlled studies in pregnant women, docetaxel can cause fetal harm or death when administered during pregnancy based on its mechanism of action and animal studies. Women who are pregnant or who become pregnant while receiving docetaxel should be apprised of the potential hazard to the fetus. An increased incidence of embryofetal toxicities (e.g., intrauterine mortality, resorptions, reduced fetal weights, and fetal ossification delays) occurred when docetaxel was administered to pregnant rats and rabbits during organogenesis at doses 0.02 and 0.003 times the recommended human dose based on body surface area, respectively; maternal toxicity was also observed at these doses. Additionally, docetaxel injection is formulated with alcohol, which has been independently associated with fetal harm including central nervous system abnormalities, behavioral disorders, and impaired intellectual development.

Due to the potential for serious adverse reactions in nursing infants from docetaxel, advise women to discontinue breast-feeding during treatment and for 1 week after the final dose. It is not known whether docetaxel is present in human milk, although many drugs are excreted in human milk.[60484]