1.87% ivermectin paste for use in horses of all ages, including pregnant mares, for the removal and control of large and small strongyles, pinworms, ascarids, hairworms, stomach worms, bots, lungworms and threadworms. Easy-to-use applicator delivers precise dosage of 91 mcg ivermectin per lb body weight. Each syringe treats up to 1,250 lbs body weight