A combination formula providing critical nutrients to stimulate cells to help build joint cartilage. Glucosamine. Glucosamine is a naturally occurring chemical found throughout the human body, including in the fluids surrounding joints. This formula contains 1,500 mg of glucosamine sulfate, the form of glucosamine used most often in research. Chondroitin. Chondroitin is another naturally occurring chemical, found in cartilage around joints in the body. Included are 1,200 mg of chondroitin sulfate, the most widely available and commonly used form of this nutrient.