Florfenicol (b)

Florfenicol is a fluorinated synthetic analog of thiamphenicol. Florfenicol is currently indicated for the treatment of bovine respiratory disease (BRD) associated with Mannheimia (Pasteurella) haemolytica, Pasteurella multocida, and Haemophilus somnus, for treatment of bovine interdigital phlegmon (foot rot, acute interdigital necrobacillosis, infectious pododermatitis) associated with Fusobacterium necrophorum and Bacteroides melaninogenicus. Florfenicol is also used in aquaculture, and is licensed for use in the United States for the control of enteric septicemia in catfish.