Ceftizoxime clinical pharmacology

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Clinical Pharmacology[edit | edit source]

Following IV administration of 1, 2, and 3 gram doses of Cefizox to normal volunteers, the following serum levels were obtained.

A serum half­life of approximately 1.7 hours was observed after IV administration.

Cefizox is 30% protein bound.

Cefizox is not metabolized, and is excreted virtually unchanged by the kidneys in 24 hours. This provides a high urinary concentration. Concentrations greater than 6000 μg/mL have been achieved in the urine by 2 hours after a 1 gram dose of Cefizox intravenously. Probenecid slows tubular secretion and produces even higher serum levels, increasing the duration of measurable serum concentrations.

Cefizox achieves therapeutic levels in various body fluids, e.g., cerebrospinal fluid (in patients with inflamed meninges), bile, surgical wound fluid, pleural fluid, aqueous humor, ascitic fluid, peritoneal fluid, prostatic fluid and saliva, and in the following body tissues: heart, gallbladder, bone, biliary, peritoneal, prostatic, and uterine.

In clinical experience to date, no disulfiram­like reactions have been reported with Cefizox.^[1]

References[edit | edit source]

Adapted from the FDA Package Insert.