General Info:

Erythromycin is an antibiotic used to treat many kinds of infections, including:

Acute pelvic inflammatory disease, gonorrhea, intestinal parasitic infections, legionnaires' disease, listeriosis, pinkeye, rectal infections, reproductive tract infections, skin infections, syphilis, upper and lower respiratory tract infections, urinary tract infections, whooping cough.
Erythromycin is also prescribed to prevent rheumatic fever in people who are allergic to penicillin and sulfa drugs. It is prescribed before colorectal surgery to prevent infection.