Farnam Horse Health Ivermectin Paste 1.87% provides effective treatment and control of a wide range of parasites in horses, including large and small strongyles, pinworms, ascarids, hairworms, large-mouth stomach worms, bots, lungworms, intestinal threadworms, and summer sores caused by Habronema and Draschia spp. A single apple-flavored dose removes worms and bots and is safe for all horses, including broodmares, stallions, and foals One syringe treats horses up to 1,250 lbs (600 kg) and is proudly made in the USA from U.S. and imported ingredients