An unadulterated source of lysine recommended for horses whose diets are low in legumes, such as alfalfa, clover, and soy. Lysine, an essential amino acid, is the most common amino acid deficiency. Insufficient lysine may hinder growth and development of a horses body and hooves and lead to poor coat condition. Supplementing with AniMeds L-Lysine Powder may increase the quality and availability of protein in the diet—especially in grass and hay-based diets—without a major increase in crude protein of the feed ration. 5lb. Each.