4 lb.- 448 days @ 1 scoop/day. Each scoop supplies 3 grams of pure lysine. For foals and weanlings up to one year, feed 2 scoops (6 grams l-lysine) per day. Feed mature horses, 1 to 3 scoops daily, depending upon activity. Broodmares, breeding stallions, horses in heavy training or competition: 2 to 3 scoops daily. 4 gm scoop enclosed.