Finish Line Performance Builder Horse Supplement (Gallon)Finish Line Performance Builder Horse Supplement (Gallon) Finish Line Performance Builder is expertly formulated to support rapid and healthy muscle growth in horses across all life stages, from weanlings to mature and pre sale horses. Combining a precise blend of gamma oryzanol, calcium HMB, l leucine, and methionine, it promotes muscle development while enhancing overall health. Noticeable improvements in muscle tone and strength can be achieved