to evaluate the intensity of the localized pain caused by intramuscular administration of 6- [ ( r ) -2- [ 3-methylsulfonyl-2-oxo-imidazolidine-1-carboxamido ] -2-phenyl-acetamido ] -penicillanic acid sodium salt ( mezlocillin , baypen ) , the pain was compared to that caused by ampicillin in a blind test .
C0025893
mezlocillin
C0002680
ampicillin