Cell FX is rich in chondroitin sulfate, a naturally occurring and critical building block of cartilage. Scientific studies have demonstrated that supplementation with chondroitin sulfate replenishes chondroitin sulfate content in the cartilage to healthy levels, stimulates synthesis of other cartilage building blocks, such as collagen and proteoglycans, and inhibits the breakdown of cartilage. Deterioration of connective tissue, such as cartilage, prevents joints from moving smoothly. This friction cases bone and joint pain. Cell FX helps relieves symptoms of bone and joint pain by helping the formation of connective tissue.