AniMed Weight - Up is a unique formula that is designed to help gain and maintain optimum weight of horses, as well as support normal digestion. It contains 40% fat from flaxseed meal and vegetable oil, plus essential Omega 3 Fatty acids, live yeast culture Yea-Sacc 1026 and Lacto-Mos to help provide supplemental source of fat and calories required to put on additional weight and increase the number and activity of the good bacteria in the digestive system of equines. It also helps promote healthier skin and coat. Product comes in a 10 lb. bucket.