First Companion Equistrength Paste (Pyrantel Pamoate) controls small and large strongyles, roundworms, and pinworms. This is a pyrantel-based wormer that will effectively control tapeworms when used twice a year at double the recommended dose. It is also ideal when used routinely as a base wormer within a regular worming program to control roundworms, redworms and pinworms. One tube will treat a 1,200 lb horse. Safe for use in healthy horses/ponies, foals older than 2 months, stallions, and breeding mares.