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• Interactions

Many drugs can interact with erythromycin. Below is just a partial list. Tell your doctor if you are using:

• digoxin (Lanoxin);

• sildenafil (Viagra);

• disopyramide (Norpace);

• warfarin (Coumadin);

• theophylline (Theo-Dur, Theobid, and others);

• alprazolam (Xanax) or triazolam (Halcion);

• ergotamine (Ercaf, Cafergot, Ergostat, Ergomar) or dihydroergotamine (D.H.E. 45, Migranal);

• carbamazepine (Tegretol), phenytoin (Dilantin), or valproic acid (Depakote, Depakene);

• tacrolimus (Prograf);

• cyclosporine (Sandimmune, Neoral);

• lovastatin (Mevacor) or simvastatin (Zocor);

• bromocriptine (Parlodel);

• cilostazol (Pletal);

• quinidine (Quinaglute, Quinidex);

• vinblastine (Velban); or

• other antibiotics.

This list is not complete and there may be other drugs that can interact with erythromycin. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have any of these serious side effects:

• chest pain, uneven heartbeats, feeling light-headed or fainting;

• nausea, stomach pain, low fever, lost appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes); or

• diarrhea that is watery or bloody.

Less serious side effects may include:

• mild nausea, vomiting, diarrhea, or stomach pain;

• dizziness, headache, feeling tired;

• vaginal itching or discharge; or

• mild itching or skin rash.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.