Combination anthelmintic and boticide. 1.87% Ivermectrin paste that controls large and small strongyles, pinworms, ascarids, large mouth stomach worms, lungworms, hairworms, intestinal threadworms and bots. One tube treats a 1250 lb. horse with syringe marked in 250 lb. increments. Safe for use on pregnant mares, breeding stallions and foals.