Ceftizoxime (Standard) is a reference standard for research and analysis in studies involving Ceftizoxime. Ceftizoxime (Epocelin) is a cephalosporin-based, potent antibacterial agent which can be administered intravenously or by suppository. It is highly resistant to a broad spectrum of beta-lactamases and is active against a wide range of both aerobic and anaerobic gram-positive and gram-negative organisms.