Ceforanide is a second-generation cephalosporin antibiotic. Ceforanide is a new cephalosporin with a longer elimination half-life than any currently available cephalosporin. Its activity is very similar to that of cefamandole, a second-generation cephalosporin, except that ceforanide is less active against most gram-positive organisms. Many coliforms, including Escherichia coli, Klebsiella, Enterobacter, and Proteus, are susceptible to ceforanide, as are most strains of Salmonella, Shigella, Hemophilus, Citrobacter and Arizona species. However, most strains of Serratia marcescens and all Pseudomonas aeruginosa are resistant to this compound. Ceforanide also has been shown to be as effective as cephalothin or cephaloridine when given prophylactically for vaginal hystere. Ceforanide is a new (parenteral) long-acting cephalosporin with antimicrobial activity comparable to those of other second-generation cephalosporins.