Pure Lysine can dramatically increase the quality and availability of the protein in the horse’s diet, without significantly increasing the crude protein percentage. Pure Lysine is especially recommended for equine diets low in alfalfa, clover, and soy. Recommended Feeding: Foals and weanlings up to one year: 1 scoop (3 grams l-lysine) per day. Mature horses: 1 to 3 scoops daily. Broodmares, horses in heavy training or competition: 2 to 3 scoops daily. Increase feeding of large breeds proportionately according to body weight in excess of 1,000 pounds. 4 gram scoop included.