Gastric Aid Liquid is not just another calcium-magnesium-aluminum acid buffering product. Liquid or poweder is a revolutionary new formula that promotes healthy digestive function, promoting healthy appetite, performance and attitude. Safe for foals, Gastric Aid Liquid is recommended for all horses that are confined to stalls or engaged in moderate to heavy work schedules. Gastric Aid Liquid is not a drug, will not test positive and can be given over extended periods. U-7TM contains natural active indredients that promotes digestive health in your horses. Give 2 ounces in the morning, and two ounces in the evening for 30 days. Reduce to one ounce, twice daily thereafter.