(Equi-aid) May help reduce the possibility of digestive colic in horses. Equi Aid now comes in pellet form with flavoring for easier feeding. Equi Aid is 99% psyllium and 1% flavoring. Contains seed husk to increase ration bulk. For a 1,000 lb. horse, provide one or two scoops (4 oz. scoop provided) per day for 7 consecutive days, every month.