(Bio-Nutrition) The only iron/vitamin B supplement with patented heme iron polypeptide. HIP is absorbed into the bloodstream 17 times more completely than other irons. Proven in veterinary-controlled clinical trials to increase iron serum levels and hemoglobin/oxygen in the blood. Hemoglobin is the carrier of oxygen in the bloodstream, which in turn supplies oxygen to the tissues. Higher hemoglobin levels increase stamina and the ability to finish strong. Also contains vitamins B3, B2, B1, B6, B12, vitamin E, copper and cobalt. Use to maintain healthy blood levels in horses in training or during the competition seasons. Granules.