Erythromycin, Generic Erythromycin, Erythromycin Estolate is in a class of drugs called macrolide antibiotics and fights bacteria in the body.

Erythromycin Estolate is used to treat many different types of bacterial infections, such as tonsillitis, bronchitis, pneumonia, whooping cough, Legionnaire's disease, chlamydia, gonorrhea, skin infections, and others.