Studies have proven EQUIMAX safe for foals four weeks of age and older, pregnant and lactating mares - no adverse effects on fertility, breeding stallions - semen quality and reproductive hormone levels were unaffected. Has been shown 100% effective against the most common species of tapeworm (A. perfoliata). A single syringe contains enough active ingredients to treat horses weighing up to 1,320 lb. Easy-to-use-and-handle syringe/applicator for more accurate dosing. A smooth, quick-dissolving paste. For use on horses only.