The First Companion Equistrength Pyrantel Paste Horse Antiparasitic makes saying bye-bye to pesky internal parasites easy and simple. This paste dewormer helps to both remove and control mature large strongyles, small strongyles, pinworms and large roundworms. Suitable for use in both horses and ponies, this apple-flavored paste is easy to administer. A full syringe treats up to 1,200 pounds of body weight, ideal for your average-sized horse. It’s an easy way to help keep your horse happy, healthy and parasite-free.