Cefmetazole is a semisynthetic cephamycin antibiotic. It has a broad spectrum of activity comparable to that of the second-generation cephalosporins, covering gram-positive, gram-negative, and anaerobic bacteria. Its bactericidal action results from inhibition of cell wall synthesis. It effectively treats abdominal and respiratory tract infections, pelvic inflammatory disease, urinary tract infections, skin and soft tissue infections and used for surgical prophylaxis, reducing or eliminating signs and symptoms of infection. Cefmetazole has a low frequency of adverse effects, and a side effect profile similar to that of other cephamycins. Adverse effects following overdosage have included nausea, vomiting, epigastric distress, diarrhea, and convulsions.