This is an economical way to treat pinworms, roundworms, and large and small strongyles in horses and ponies. Easy to administer apple flavored paste in a convenient oral syringe that contains 3.6 grams pyrantel pamoate per syringe. Get the correct dose every time with a syringe that is clearly marked in 300 pound increments. Each syringe treats up to 1200 pounds.