Biaxin contains the active ingredient clarithromycin, which is a semi-synthetic macrolide antimicrobial. It is available as immediate-release tablets containing 250 mg or 500 mg of clarithromycin for oral use. Key inactive ingredients include microcrystalline cellulose, croscarmellose sodium, and magnesium stearate.

How should I use this medication?

Take this medication by mouth with water. Take it as directed on the prescription label at the same time every day. You can take it with or without food. If it upsets your stomach, take it with food. Take all of this medication unless your care team tells you to stop it early. Keep taking it even if you think you are better. Talk to your care team about the use of this medication in children. While it may be prescribed for children for selected conditions, precautions do apply.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once. NOTE: This medicine is only for you. Do not share this medicine with others.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

Where should I keep my medication?

Keep out of the reach of children and pets. Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Protect from light. Keep the container tightly closed. Get rid of any unused medication after the expiration date. To get rid of medications that are no longer needed or have expired: -Take the medication to a medication take-back program. Check with your pharmacy or law enforcement to find a location. -If you cannot return the medication, check the label or package insert to see if the medication should be thrown out in the garbage or flushed down the toilet. If you are not sure, ask your care team. If it is safe to put it in the trash, empty the medication out of the container. Mix the medication with cat litter, dirt, coffee grounds, or other unwanted substance. Seal the mixture in a bag or container. Put it in the trash.

NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.

What side effects may I notice from receiving this medication?

Side effects that you should report to your care team as soon as possible: -Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat -Heart rhythm changes—fast or irregular heartbeat, dizziness, feeling faint or lightheaded, chest pain, trouble breathing -Liver injury—right upper belly pain, loss of appetite, nausea, light-colored stool, dark yellow or brown urine, yellowing skin or eyes, unusual weakness or fatigue -Muscle weakness -Rash, fever, and swollen lymph nodes -Redness, blistering, peeling, or loosening of the skin, including inside the mouth -Severe diarrhea, fever -Unusual vaginal discharge, itching, or odor Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome): -Change in taste -Confusion -Diarrhea -Dizziness -Nausea -Stomach pain -Vomiting

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What should I tell my care team before I take this medication?

They need to know if you have any of these conditions: -Heart disease -History of irregular heartbeat -Kidney disease -Liver disease -Myasthenia gravis -An unusual or allergic reaction to clarithromycin, other macrolide antibiotics, other medications, foods, dyes, or preservatives -Pregnant or trying to get pregnant -Breast-feeding

What may interact with this medication?

Do not take this medication with any of the following: -Certain medications for fungal infections, such as fluconazole, itraconazole, ketoconazole, posaconazole, voriconazole -Cisapride -Dronedarone -Naloxegol -Pimozide -Thioridazine This medication may also interact with the following: -Carbamazepine -Certain medications for anxiety or sleep, such as alprazolam, triazolam -Certain medications for cholesterol, such as atorvastatin, lovastatin, simvastatin -Certain medications for irregular heartbeat, such as amiodarone, disopyramide, flecainide, procainamide, quinidine -Certain medications that treat or prevent clots, such as warfarin -Colchicine -Cyclosporine -Digoxin -Dofetilide -Ergot alkaloids, such as ergotamine, dihydroergotamine -Estrogen or progestin hormones -Other antibiotics, such as grepafloxacin, rifabutin, sparfloxacin -Other medications that cause heart rhythm changes -Ritonavir -Sildenafil -Terfenadine -Theophylline -Zidovudine -Ziprasidone

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

What should I watch for while using this medication?

Visit your care team for regular checks on your progress. Tell your care team if your symptoms do not start to get better or if they get worse. This medication may cause serious skin reactions. They can happen weeks to months after starting the medication. Contact your care team right away if you notice fevers or flu-like symptoms with a rash. The rash may be red or purple and then turn into blisters or peeling of the skin. You may also notice a red rash with swelling of the face, lips, or lymph nodes in your neck or under your arms. Do not treat diarrhea with over the counter products. Contact your care team if you have diarrhea that lasts more than 2 days or if it is severe and watery. If you have diabetes, monitor your blood sugar carefully while on this medication.