Panacur is the trade name for Fenbendazole. Panacur is made in very many formulations. We keep the powder form and oral paste which is in easy dose syringes. It is not a complete wormer being only 60% effective for Dipylidium Caninum one of the major canine tape worms but it is useful for young stock, and it treats a quite common parasite of young puppies which causes mucous diarrhoea called Giardia. There are few ill-effects.