Anatomical Therapeutic Chemical (ATC) classification [BR:br08303] J ANTIINFECTIVES FOR SYSTEMIC USE J01 ANTIBACTERIALS FOR SYSTEMIC USE J01C BETA-LACTAM ANTIBACTERIALS, PENICILLINS J01CF Beta-lactamase resistant penicillins [DG:DG01779] J01CF03 Meticillin [DG:DG02500] C07177 Methicillin Drug groups [BR:br08330] Antibacterial DG01779 beta-Lactamase resistant penicillin DG02500 Methicillin C07177 Methicillin