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  • Zubsolv


    Partial opioid agonist/opioid antagonist




    Opioid Dependence

    Used as part of a complete treatment plan to include counseling and psychosocial support

    Administer as single daily dose in patients initially inducted using buprenorphine SL tab

    One Zubsolv 5.7mg-1.4mg SL tab provides equivalent buprenorphine exposure to one Suboxone 8mg-2mg SL tab

    Corresponding Doses from Induction (Buprenorphine) to Maint (Zubsolv) Treatment:
    One 8mg Buprenorphine Tab:
    One 5.7 mg/1.4 mg Zubsolv tab
    12mg Buprenorphine (One 8mg and Two 2mg Tabs):
    One 8.6 mg/2.1 mg Zubsolv tab
    16mg Buprenorphine (Two 8mg Tabs):
    One 11.4 mg/2.9 mg Zubsolv tab

    Target Dose: 11.4mg-2.9mg/day as single daily dose
    Titrate: Adjust dose progressively in increments/decrements of 1.4mg-0.36mg or 2.8mg-0.72mg to maintain treatment and suppress opioid withdrawal signs and symptoms
    Range: 2.8mg-0.72mg to 17.2mg-4.2mg/day, based on individual needs

    Discontinuing Therapy:
    Should be made as part of a comprehensive treatment plan

    Switching Between Zubsolv and Other Buprenorphine/Naloxone Combination Products:
    Dose adjustments may be necessary
    Monitor for signs of over-medication or under-dosing (eg, withdrawal)

    Corresponding Dosage Strengths when Switching Between Suboxone and Zubsolv:
    One 2mg/0.5mg Buprenorphine/Naloxone SL Tab:
    One 1.4mg/0.36mg Zubsolv tab
    One 8mg/2mg Buprenorphine/Naloxone SL Tab:
    One 5.7mg/1.4mg Zubsolv tab
    12mg/3mg Buprenorphine/Naloxone (One 8mg/2mg Tab and Two 2mg/0.5mg Tabs): One 8.6mg/2.1mg Zubsolv tab
    16mg/4mg Buprenorphine/Naloxone (Two 8mg/2mg Tabs): One 11.4mg/2.9mg Zubsolv tab


    Hepatic Impairment
    Severe: Avoid use

    Start at low end of dosing range


    SL route

    Do not cut, chew, or swallow; SL tab should be placed under tongue until dissolved
    For dosages requiring more than one SL tab, place all tablets in different places under tongue at same time
    Advise patients not to eat or drink anything until tab is completely dissolved


    Tab, SL: (Buprenorphine/Naloxone) 1.4mg/0.36mg, 5.7mg/1.4mg, 8.6mg/2.1mg, 11.4mg/2.9mg


    Not appropriate as an analgesic. Hypersensitivity reactions, bronchospasm, angioneurotic edema, and anaphylactic shock reported. May precipitate opioid withdrawal signs and symptoms if administered before the agonist effects of the opioid have subsided. Avoid with severe hepatic impairment; caution in patients with moderate hepatic impairment who have initiated treatment on a buprenorphine product without naloxone. May impair mental/physical abilities. May produce orthostatic hypotension in ambulatory patients. Caution with debilitated patients, myxedema or hypothyroidism, adrenal cortical insufficiency (eg, Addison's disease), CNS depression or coma, toxic psychoses, prostatic hypertrophy, urethral stricture, acute alcoholism, delirium tremens, kyphoscoliosis, and in elderly. Buprenorphine: Potential for abuse. Significant respiratory depression reported; caution with compromised respiratory function. To manage overdose, higher than normal doses and repeated administration of naloxone may be necessary. Accidental pediatric exposure can cause fatal respiratory depression. Chronic use produces physical dependence. Cytolytic hepatitis and hepatitis with jaundice reported. If a hepatic event is suspected, biological and etiological evaluation is recommended; careful discontinuation may be needed depending on the case. Caution with preexisting liver enzyme abnormalities, hepatitis B or C infection, use with other potentially hepatotoxic drugs, and ongoing injecting drug use. Neonatal abstinence syndrome reported when used during pregnancy. May elevate CSF pressure; caution with head injury, intracranial lesions, and other circumstances when CSF pressure may be increased. May produce miosis and changes in consciousness level that may interfere with patient evaluation. May increase intracholedochal pressure; caution with biliary tract dysfunction. May obscure diagnosis or clinical course of patients with acute abdominal conditions.


    Headache, withdrawal syndrome, pain, N/V, insomnia, sweating, constipation, abdominal pain, vasodilation.


    May cause respiratory depression, coma, and death with benzodiazepines or other CNS depressants (eg, alcohol); caution when used concurrently. May cause increased CNS depression with opioid analgesics, general anesthetics, benzodiazepines, phenothiazines, other tranquilizers, sedative/hypnotics, or other CNS depressants (eg, alcohol); consider dose reduction of one or both agents if used concomitantly. Concomitant use with CYP3A4 inhibitors (eg, azole antifungals such as ketoconazole, macrolides such as erythromycin, and HIV protease inhibitors) should be monitored and may require dose reduction of 1 or both agents. Monitor for signs and symptoms of opioid withdrawal with CYP3A4 inducers (eg, efavirenz, phenobarbital, carbamazepine, phenytoin, rifampicin). Monitor dose if non-nucleoside reverse transcriptase inhibitors are added to treatment regimen. Atazanavir and atazanavir/ritonavir may increase levels; monitor and consider dose reduction of buprenorphine.


    Category C, caution in nursing.


    Buprenorphine: Partial agonist at the µ-opioid receptor and antagonist at the kappa-opioid receptor. Naloxone: Potent antagonist at the µ-opioid receptor.


    Distribution: Plasma protein binding (96%, buprenorphine; 45%, naloxone); found in breast milk (buprenorphine). Metabolism: Buprenorphine: N-dealkylation (by CYP3A4) and glucuronidation; norbuprenorphine (major metabolite). Naloxone: Glucuronidation, N-dealkylation, and reduction; naloxone-3-glucoronide (metabolite). Elimination: Buprenorphine: Urine (30%), feces (69%); T1/2=24-42 hrs. Naloxone: T1/2=2-12 hrs.


    Assess for history of hypersensitivity reactions, debilitation, myxedema, hypothyroidism, acute alcoholism, adrenal cortical insufficiency (eg, Addison's disease), CNS depression or coma, toxic psychoses, prostatic hypertrophy, urethral stricture, delirium tremens, kyphoscoliosis, biliary tract dysfunction, hepatic impairment, compromised respiratory function, hepatitis B or C infection, head injury, intracranial lesions and other circumstances in which CSF pressure may be increased, acute abdominal conditions, pregnancy/nursing status, and possible drug interactions. Perform LFTs prior to therapy.


    Monitor for hypersensitivity reactions, signs/symptoms of opioid withdrawal, impaired mental/physical ability, orthostatic hypotension, respiratory depression, drug abuse/dependence, cytolytic hepatitis, hepatitis with jaundice, elevation of CSF pressure, miosis, changes in consciousness levels, and other adverse reactions. Monitor LFTs periodically. Monitor for over-medication as well as withdrawal or other signs of under-dosing when switching between other buprenorphine/naloxone products.


    Warn about danger of self-administration of benzodiazepines and other CNS depressants, including alcohol, while on therapy. Advise that the drug contains an opioid that can be a target for abuse; instruct to keep tabs in safe place protected from theft and children. Instruct to seek medical attention immediately if a child is exposed to the drug. Caution that drug may impair mental/physical abilities and cause orthostatic hypotension. Advise to take tab qd and not to change dose without consulting physician. Counsel about instructions for missed dose. Inform that treatment can cause dependence and withdrawal syndrome may occur upon discontinuation. Advise patients seeking to d/c treatment with buprenorphine for opioid dependence to work closely with physician on a tapering schedule, and apprise of the potential to relapse to illicit drug use associated with discontinuation of treatment. Advise to report to physician all medications prescribed or currently being used. Advise women regarding possible effects during pregnancy. Advise women who are breastfeeding to monitor the infant for drowsiness and difficulty breathing. Advise to instruct family members that, in event of emergency, the treating physician or staff should be informed that patient is physically dependent on an opioid. Advise to dispose of unused drugs as soon as they are no longer needed by flushing the tabs down the toilet.


    20-25°C (68-77°F); excursions permitted to 15-30°C (59-86°F).