Digest It, Enzyme Dietary Supplement for Horses - 5 LB All natural Direct-Fed Microbial (DFM) and enzyme dietary supplement Formulated to improve vita-nutrient function for growth, maintenance, reproduction, lactation, work Fights colic, tie-ups and gas pains Beneficial microflora (friendly bacteria) and digestive enzymes Size: 5 lbs; up to 80 days at full ration