M.A.S.S. Builder Multi-Active Strengthening System, Performance, 1 Gallon , Kinetic Technologies 5001-03-01
 
M.A.S.S. (Multi-Active Strengthening System) Liquid is a safe, all-natural and non-steroidal product that is clinically demonstrated to support healthy weight in horses. Combines gamma oryzanol, L-lysine, threonine and fenugreek for maximum efficacy.