Erythromycin belongs to a group of drugs called macrolide antibiotics. It slows the growth of, or sometimes kills, sensitive bacteria by reducing the production of important proteins needed by the bacteria to survive.
Erythromycin is used to treat a number of bacterial infections such as respiratory tract infections, skin infections, chlamydia infections, syphilis and pelvic inflammatory disease.
For the best effect, take this antibiotic at evenly spaced times. To help you remember, take this medication at the same time(s) every day. Most frequent side effects include loss of appetite, nausea, vomiting, abdominal pain, diarrhea, hives and rash.