Invigor is a granular, tan colored prebiotic feed topper built around dehydrated and hydrolyzed yeast cultures along with corn distillers dried grains with solubles. It is designed to be mixed into a horse's regular daily feed ration to support the hindgut microbial population and help the digestive system make better use of nutrients already in the diet. The formula includes calcium propionate as a preservative and carries a mild yeast aroma. Each bucket ships with a two ounce scoop so daily servings can be measured consistently, with the base feeding rate calculated for an average 1,100 pound horse and adjusted for individual body weight. It fits into daily feeding programs for horses in light work, full training, or retirement, and is intended for animal use only. Product should be kept sealed in its original container between feedings.