Penicillin G Potassium

Bicillin; Pfizerpen; Wycillin

For the Japanese rock band, see Penicillin (band). Penicillin nucleus Penicillin (sometimes abbreviated PCN) refers to a group of β-lactam antibiotics used in the treatment of bacterial infections caused by susceptible, usually Gram-positive, organisms. The name “penicillin” can also be used in reference to a specific member of the penicillin group. Penicillins have the molecular formula R-C9H11N2O4S, where R is a variable side chain. History The serendipitous discovery of ...