Equim6.42G Wormer Paste 100% effective against the most common species of tapeworm, A. perfoliata. Safe for all horses including foals, mares, ponies and breeding stallions. Contains enough medication to treat horses up to 1,320 pounds in a single application. Packaged in an innovative applicator that allows for easier, more accurate dosing. Medication is a smooth, highly palatable and quick dissolving paste.