M.A.S.S. Builder Multi-Active Strengthening System Performance

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M.A.S.S., Multi-Active Strengthening System, supplies nutrients to help strengthen your horse’s muscles. The combination of several ingredients meets all the demands of your horse, plus Fenugreek helps maintain a healthy appetite. It is rich in vitamins and minerals and high in protein. Contains two essential amino acids, lysine and threonine, which have been proven to help support optimum weight. Show more