Penicillin drugs, among the most commonly prescribed, include Penicillin G, nafcillin and amoxicillin.
US News(Nov 21, 2014)
n a penicillinase-resistant form of penicillin (trade name Nafcil) used (usually in the form of its sodium salt) to treat infections caused by penicillin-resistant strains of staphylococci
Syn|Hyper
Nafcil
penicillinase-resistant antibiotic
a form of penicillin that is not rendered inactive by penicillinase