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Keflex is an antibiotic used to treat bacterial infections of the respiratory tract, ear, skin, bone, urinary tract, and prostate.
How does this medication work?
Keflex works by stopping the growth of bacteria, thereby treating your infection.
Keflex does not treat viral infections, such as the common cold.
What are the beneficial effects of this medication and when should I begin to have results?
What: Keflex may help to treat your infection, thereby improving your symptoms.
When: Everyone responds differently to treatment, so try to be patient and follow your healthcare provider's directions. It is important that you take Keflex exactly as your healthcare provider has prescribed for the full course of treatment, even if your symptoms improve earlier.
How do I know it is working?
You may start to notice an improvement in your symptoms. This is a good indicator that your medication is working. Your healthcare provider may ask you questions and order tests to assess how well your infection is being treated.
The following is not a full list of side effects. Side effects cannot be anticipated. If any develop or change in intensity, tell your healthcare provider as soon as possible. Only your healthcare provider can determine if it is safe for you to continue taking this medication.
More common side effects may include: diarrhea, nausea, vomiting, dyspepsia, abdominal (stomach area) pain.
Less common side effects may include:
Watery and bloody stools, even as late as two or more months after taking the last dose of Keflex.
Serious allergic reactions with symptoms such as rash, hives, skin redness, or swelling of your face or throat.
Do not take Keflex if you are allergic to it, any of its ingredients, or to other similar medicines (such as cefadroxil).
Tell your healthcare provider about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Keflex. Also, talk to your healthcare provider about your complete medical history, especially if you have a penicillin allergy, kidney or liver problems, if you are taking blood thinner medications, or if you are pregnant, plan to become pregnant, or are breastfeeding.
The information below is based on the dosage guidelines your healthcare provider uses. Depending on your condition and medical history, your healthcare provider may prescribe a different regimen. Do not change the dosage or stop taking your medication without your healthcare provider's approval.
Adults and children ≥15 years: The usual dose is 250 milligrams (mg) every 6 hours, or 500 mg every 12 hours, as determined by your healthcare provider.
Children >1 year: Your healthcare provider will prescribe the appropriate dose for your child, based on his/her body weight.
If you have kidney impairment, or have severe infections, your healthcare provider may adjust your dose appropriately.
Take Keflex exactly as prescribed by your healthcare provider. Do not change your dose or stop taking Keflex without first talking to your healthcare provider.
Do not skip doses. Skipping doses or not completing the full course of Keflex can decrease the effectiveness and can lead to the growth of bacteria that are resistant to the effects of Keflex.
If Keflex is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your healthcare provider before combining Keflex with the following: metformin or probenecid.
The effects of Keflex during pregnancy are unknown. Keflex can be found in your breast milk if you take it while breastfeeding. Tell your healthcare provider immediately if you are pregnant, plan to become pregnant, or are breastfeeding.
If you miss a dose of Keflex, take it as soon as you remember. However, if it is almost time for your next dose, skip the one you missed and return to your regular dosing schedule. Do not take two doses at once.
Store at room temperature.
In the event of a medical emergency call your doctor or 9-1-1 immediately. In the event of overdose, call your doctor or poison control for further instructions.
National Poison Control#: Call 1-800-222-1222
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