ProElite Top-Line Xtreme Supplement for HorsesProElite Top Line Xtreme is a fast acting amino acid supplement to support healthy topline, muscle development, and recovery from performance from high quality, easily digestible protein sources. 15 lb tub available by Special Order Nutrient Analysis: Crude Protein (min.)65%; 73,709 mg scoop Lysine (min.)4. 3%; 4,876 mg scoop Methionine (min.)2. 2%; 2,495 mg scoop Threonine (min.)3. 4%; 3,856 mg scoop Leucine (min.)5. 8%; 6,577 mg scoop Isoleucine