• Basic Info
• Clinical Info

What is this medicine?

ERYTHROMYCIN (er ith roe MYE sin) is a macrolide antibiotic. It is used to treat certain kinds of bacterial infections. It will not work for colds, flu, or other viral infections. This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

• liver disease
• myasthenia gravis
• an unusual or allergic reaction to erythromycin, other medicines, foods, dyes, or preservatives
• pregnant or trying to get pregnant
• breast-feeding

How should I use this medicine?

Take this medicine by mouth with glass of water. Follow the directions on the prescription label. Take this medicine on an empty stomach, at least 30 minutes before or 2 hours after food. If this medicine upsets your stomach, take with food or milk. Take your medicine at regular intervals. Do not take your medicine more often than directed. Do not skip doses or stop your medicine early even if you feel better. Do not stop taking except on your doctor's advice. Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed. 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.

What may interact with this medicine?

Do not take this medicine with any of the following medications:

• chloroquine
• cisapride
• droperidol
• eplerenone
• ergotamine and dihydroergotamine
• methadone
• other antibiotics, like grepafloxacin or sparfloxacin
• sirolimus
• some medicines for cholesterol like atorvastatin, cerivastatin, lovastatin, and simvastatin
• some medicines for heart rhythm problems
• some medicines for psychotic disturbances
• vinblastine
• red yeast rice

• alfentanil
• bromocriptine
• carbamazepine
• cyclosporine
• digoxin
• some medicines for anxiety or difficulty sleeping
• phenytoin
• terfenadine
• theophylline
• valproate
• warfarin

What should I watch for while using this medicine?

Tell your doctor or health care professional if your symptoms do not improve or if they get worse. Do not treat diarrhea with over the counter products. Contact your doctor if you have diarrhea that lasts more than 2 days or if it is severe and watery.