Products Back to Catalog Bolus Fenatek Bolus Each bolus Contains: Fenbendazole 1.5 gms. A safe dewormer for pregnant animals Most effective against nematodes, tapeworms and flukes Non terratogenic and non-embryotoxic Dose : 1 bolus is upto 300 kg. b.wt. Presentation : 2 bolus blister pack.