(Med-Vet Pharmaceuticals) Glucosamine is an important factor in maintaining joint structure integrity. Studies have shown glucosamine to stimulate the production of hyaluronic acid, a major component of synovial fluid, which aids in the lubrication of the joint. Also includes a full level serving of MSM, plus Ester-C, amino acids, and yucca. Feeding levels: Horses: Top dress on feed one measure twice daily during high-level stress and/or working conditions. Maintenance Level: Top dress on feed 1/2 measure twice-daily providing approx. 10,500 mg of MSM and 8,000-mg of glucosamine daily. Pellet.