For the removal and control of large strongyles, small strongyles (including benzimidazole-resistant small strongyles), pinworms, ascarids, hairworms, stomach worms, bots, lungworms and threadworms. Safe for all horses, including mares at any stage of pregnancy, plus foals as young as 6 weeks of age. Stallions may be treated without adversely affecting their fertility. Each syringe treats up to 1,250 lbs body weight. Each weight marking on the plunger delivers enough paste to treat 250 lbs body weight. For oral use in horses only. Contains 1.87% ivermectin. Directions: Deposit paste on back of horse’s tongue and immediately raise horse's head for a few seconds after dosing. Do not underdose.