Cefacetrile Products | Cleanchem - Cefacetrile is a cephalosporin antibiotic used to treat bacterial infections, including skin infections, respiratory infections, and urinary tract infections. It works by inhibiting bacterial cell wall synthesis, leading to bacterial death. Cefacetrile is effective against a wide range of gram-positive and gram-negative bacteria. Side effects may include allergic reactions, gastrointestinal disturbances, and skin rashes.