Cefapirin is an injectable cepahalosporin antibiotic, effective against gram negative & positive organisms.

The mechanism of action works by the inhibition of cell wall synthesis via the molecule’s affinity for Penicillin Binding Proteins (PBPs). Given this feature, Cefapirin tends to be more resistant to beta-lactamases than penicillins and so can be used for the treatment of staphylococci, except methicillin resistant staphylococci infections. Production of Cefapirin for humans has been discontinued in the US, but remains in use in the veterinary sector.

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