Optimum CSA contains the perfect ratio of Glucosamine Sulfate and Chondroitin Sulfate A (CSA). Glucosamine Sulfate and CSA may be beneficial in protection and maintenance of healthy joints.
According to convincing research, glucosamine sulfate may take a part supporting healthy joints.
By providing joints with the essential raw materials, glucosamine sulfate can support joint health. Research shows that it is absorbed into the body at a rate much more effective than other "joint-supporters".

Because of the small size of the molecules, they are absorbed at a rate of 98%- compare that to the mere 13% absorption rate of chondroitin sulfate, and you can understand why glucosamine sulfate works so much better. By stimulating production of additional synovial fluid, studies show that glucosamine sulfate helps keep joints in the body rolling smoothly.

Recent studies have found that as a readily absorbed building block for cartilage, glucosamine sulfate works as a supporter of cartilage in humans.

Optimum Nutrition's Glucosamine Plus CSA contains 1000 mg of pure crystalline Glucosamine Sulfate (Type A) per two capsules, the ratio recommended by many health care experts. The Extra Strength Tablets version has 1500 mg of Glucosamine and 1200 mg of Chondroitin.

Glucosamine is formed when glucose combines with an amino acid. It is a building block for cartilage. Glucosamine sulfate is a form of glucosamine that has some extremely beneficial uses, especially for healing connective tissue.
It is a small and simple molecular building block used to aid body builders and athletes with joint pain by helping to repair and lubricate the cartilage around damaged joints.

Not only can those who suffer from joint pain benefit from glucosamine sulfate intake, but athletes and bodybuilders can greatly benefit as well. In fact, nearly everybody who trains with weights may have a tendency to overuse certain joints, and consequently, glucosamine can help to regain cushioning, protecting cartilage around joints. A deficiency has not been found to occur in humans.
Take 2 tablets 1-2 times daily or as follows: if body weight is less than 120lbs - 2 tablets daily, 120lbs - 200 lbs 3 tablets daily, over 200lbs 4 tablets daily. Or as directed by a physician, licensed nutritionist or certified trainer.