Types of Antibiotics There are hundreds of different types of antibiotics, but most of them can be broadly classified into 6 groups. These are outlined below. 1. Penicillins (such as penicillin and amoxicillin) – widely used to treat a variety of infections, including skin infections, chest infections and urinary tract infections. 2. Cephalosporins (such as … Continue reading Types of Antibiotics and List of Antibiotics