list of types of antibiotics
Antibiotics (Side Effects, List, Types) Although there are well over 100 antibiotics, the majority come from only a few types of drugs. These are the main classes of antibiotics. 1  Penicillins such as penicillin and amoxicillin. 2  Cephalosporins such as cephalexin (Keflex)  Macrolides such as erythromycin (E-Mycin), clarithromycin (Biaxin), and azithromycin (Zithromax)