With easily absorbable glucosamine sulfate A natural product made of seafood, with extra absorbency. Glucosamine is a natural part of the body and is involved in the formation of cartilage. The addition of manganese promotes the building (new formation) of cartilage. Vimital Glucosamine is easily absorbed in the digestive / intestinal tract when present as glucosamine sulphate. The sulphate adds sulphur, which is also needed in the cartilage structure. Other types of glucosamine are more insoluble and therefore have less absorption. Glucosamine is an endogenous substance found in, for example, cartilage, tendons and ligaments. Strengthens a horse’s joints in training and prevents stiffness. With age the body’s ability to produce glucosamine decreases, which may be one of the reasons that older horses suffer from stiff joints.