Kompava GELO-3 Complex orange 390 g / 30 dosesGlucosamine sulfate and chondroitin sulfate are the basic and natural building blocks of articular cartilage and other connective tissues bones, ligaments and tendons . These building blocks are constantly wearing out and their number is declining with age. Collagen peptides (collagen fragments) form a signal for the body to produce its own collagen . Vitamin C contributes to the normal production of collagen and to the proper function of bones ,