From Self-sufficiency
Jump to: navigation, search
Systematic (IUPAC) name
methyl N-(6-phenylsulfanyl-1H-benzoimidazol-
CAS Number 43210-67-9
ATC code P02CA06 (WHO) QP52AC13
PubChem CID 3334
Chemical data
Formula C15H13N3O2S
Molar mass 299.349 g/mol[[Script error: No such module "String".]]
Script error: No such module "TemplatePar".Expression error: Unexpected < operator.

Fenbendazole (Hoechst brand names Panacur and Safe-Guard, Intervet Panacur and Panacur Rabbit) is a broad spectrum benzimidazole anthelmintic used against gastrointestinal parasites including roundworms, hookworms, whipworms, the taenia species of tapeworms, pinworms, aelurostrongylus, paragonimiasis, strongyles and strongyloides and can be administered to sheep, cattle, horses, fish, dogs, cats, rabbits and seals. Drug interactions may occur if using bromsalan flukicides such as dibromsalan and tribromsalan. Abortions in cattle and death in sheep have been reported after using these medications together.[1]


Despite being widely used as a dewormer in many species, toxicity has been reported. Birds (storks, pink pelicans, vultures, pigeons and doves), and reptiles (vipers, turtles and tortoises) have shown toxicity associated with bone marrow suppresion, intestinal crypt cell necrosis and distal villi sloughing.[citation needed] Abortions in domestic ruminants have been associated with concurrent use of anti-trematode therapeutic agents.[citation needed]

Fenbendazole is poorly absorbed from the gastrointestinal tract in most species. The LD50 in laboratory animals exceeds 10 g/kg when administered orally.[1]


Cite error: Invalid <references> tag; parameter "group" is allowed only.

Use <references />, or <references group="..." />

External links

  1. 1.0 1.1 Plumb's Veterinary Drug Handbook, Fifth Edition, 2005