Penicillin was the world's first antibiotic, a type of medication that kills or slows the growth of bacteria. After Scottish doctor Alexander Fleming discovered penicillin in a petri dish containing ...

Penicillin and amoxicillin can both treat bacterial infections of the ears, nose, throat, urinary tract, skin, and ...

Have you ever taken medicine for a nose or ear infection, or a long-lasting cough? If so, you’ve met up with some bad bacteria! Your doctor might explain that your illness was caused by a germ called ...