What is Meticillin?
Methicillin, also called meticillin, antibiotic formerly used in the treatment of bacterial infections caused by organisms of the genus Staphylococcus. Methicillin is a semi synthetic derivative of penicillin. It contained a modification to the original penicillin structure that made it resistant to a bacterial enzyme called penicillinase (beta-lactamase). This enzyme is produced by most strains of Staphylococcus and disrupts certain types of penicillins by hydrolyzing the beta-lactam ring that is central to the antimicrobial activity of these drugs.