Hygain Flexion Joint Supplement is a blend of quality nutraceuticals including Glucosamine hydrochloride, antioxidants, amino acids, minerals, proline and MSM, to nourish the joints, cartilage and connective tissues of horses. Glucosamine is one of the building blocks of normal healthy cartilage and is involved in collagen production and tissue integrity. Proline is an amino acid also involved in the arrangement of collagen and cartilage, while antioxidants are included to help reduce inflammation and pain by scavenging free radicals.