Erythromycin is an antibiotic prescribed to treat a variety of infections. The most frequent side effects of erythromycin are nausea, vomiting, loss of appetite, diarrhea, and abdominal pain. Consult with your doctor about any medications or supplements you may be taking and if there is potential for drug interactions with erythromycin. Check with your doctor before taking erythromycin if. Description Erythromycin is used to prevent and treat infections in many different parts of the body, including respiratory tract infections, skin infections, diphtheria, intestinal amebiasis, acute pelvic inflammatory disease, Legionnaire's disease, pertussis, and syphilis. This medicine is also used to prevent recurrent attacks of rheumatic fever in patients who have had an allergic reaction. Erythromycin (sometimes abbreviated ETM in reports) [3] is an antibiotic used for the treatment of a number of bacterial infections. [1] This includes respiratory tract infections, skin infections, chlamydia infections, pelvic inflammatory disease, and syphilis. [1] NHS information about the medicine erythromycin, including what it's used for, who can take it, how to take it and side effects. Erythromycin is used to treat certain infection caused by bacteria including infections of the ears, lungs, sinuses, skin, throat, and reproductive organs. Erythromycin is in a class of medications called macrolide antibiotics. Find patient medical information for Erythromycin (E.E.S., E-Mycin, and others) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Learn about erythromycin eye ointment usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. View erythromycin information, including dose, uses, side-effects, renal impairment, pregnancy, breast feeding, important safety information and directions for administration. Erythromycin is a macrolide antibiotic used to treat bacterial infections. Includes erythromycin side effects, interactions and indications. Learn about the side effects of erythromycin, from common to rare, for consumers and healthcare professionals.