<prompt> Neutropenia is associated with:NafcillinMethicillinCarbencillinAmpicillin  <response>: NAFCILLIN:It is a narrow spectrum beta lactam antibiotic. Pharmacology Mechanism of Action Inhibit synthesis of bacterial cell wall synthesis, which results in bactericidal activity Pharmacokinetics Half-Life: 0.5-1.5 hr adults; 0.75-1.9 hr children Peak Plasma Time: 0.5-1 hr Protein binding: 90 Absorption: Poorly absorbed orally Distribution: In fluid, bone, bile, crosses placenta. Adverse Effects 1-10: Hypersensitivity Neutropenia Interstitial nephritis Possible hypokalemia 1: Neurotoxicity high doses Pseudomembranous colitis Phlebitis oxacillin preferred in peds REFERANCE:reference.medscape.com 