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Clarithromycin oral

Important Note

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. Consult your healthcare professional before using this drug.





Clarithromycin is an antibiotic used to treat a wide variety of bacterial infections such as respiratory tract infections and skin infections. It is also used to treat peptic ulcers in combination with anti-ulcer medication. It is also used to treat ear infections in children.

How To Use

This medication may be taken with food if stomach upset occurs. Shake well before using. Take each dose followed by fluids. Antibiotics work best when the amount of medicine in your body is kept at a constant level. Do this by taking the medication at evenly spaced intervals throughout the day and night. Continue to take this medication until the full prescribed amount is finished even if symptoms disappear after a few days. Stopping the medication too early may allow bacteria to continue to grow resulting in a relapse of the infection.

Side Effects

This medication may cause stomach upset, nausea, indigestion, loose stools, loss of appetite, vomiting, headache, or a strange taste in the mouth the first few days as your body adjusts to it. If these symptoms continue or become severe, inform your doctor. Notify your doctor is you develop: diarrhea. Unlikely but report promptly: dark urine, yellowing eyes/skin, severe stomach pain, mental/mood changes, an irregular heartbeat. In the unlikely event you have an allergic reaction to this drug, seek medical attention immediately. Symptoms of an allergic reaction include: rash, itching, swelling, dizziness, trouble breathing. If you notice other effects not listed above, contact your doctor or pharmacist.


Tell your doctor if you have: other illnesses, allergies (especially drug allergies), liver disease, kidney problems, colitis, stomach problems, heart problems. Use of this medication for prolonged or repeated periods may result in a secondary infection (e.g., oral, bladder or vaginal yeast infection). Do not take any nonprescription medications to treat diarrhea without first consulting your doctor or pharmacist. This medication is not recommended for use during pregnancy except when no other antibiotic can be used. This drug can potentially cause fetal harm. Consult your doctor for more details. Small amounts of this drug do appear in breast milk, so consult your doctor before breast-feeding.

Drug Interactions

This drug should not be used with the following medications because very serious, possibly fatal, interactions may occur: cisapride, pimozide, astemizole, terfenadine. If you are currently using any of these medications, tell your doctor or pharmacist before starting clarithromycin. Before using this medication, tell your doctor of all prescription and nonprescription products you may use, especially of: barbiturates, benzodiazepines (e.g., alprazolam, midazolam, triazolam), carbamazepine, certain protease inhibitors (e.g., lopinavir, ritonavir), cyclosporine, digoxin, ergotamine/ergot- related drugs, live vaccines, omeprazole, phenytoin, theophylline, warfarin, zidovudine, certain drugs for high cholesterol (e.g., lovastatin, simvastatin), sildenafil, tacrolimus, alfentanil, rifabutin, methylprednisolone, cilostazol, bromocriptine, valproate, tolterodine. This drug may interfere with the effectiveness of birth control pills. Discuss using other methods of birth control with your doctor. Do not start or stop any medicine without doctor or pharmacist approval.


If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include nausea, vomiting, and diarrhea.


This medication has been prescribed for your current condition only. Do not use it later for another infection or give it to someone else. A different medication may be necessary.

Missed Dose

Take each dose at the scheduled time. However, if you miss a dose, take it as soon as remembered; do not take it if it is near the time for the next dose, instead, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up.


Store at room temperature between 59 and 86 degrees F (15 to 30 degrees C) away from moisture and sunlight. Do not store in the bathroom. Discard suspension after 14 days.