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.