(Corta Flx) Do some glucosamine/chondroitin supplements not seem to work for you? It could be because the size of molecules in these products just don't make it through the cell wall very easily. Flex-Force has developed smaller-sized amino acids and saccharide molecules which are the building blocks of glucosamine and chondroitin. Assisted by MSM, they actually reach through the cell wall to provide the needed building blocks for cartilage and cushioning joint fluid. In return, these key isolates stimulate the body to produce their own glucosamine and chondroitin! Feel real joint relief in just days.