Superior formulation glucosamine 500mg 2kcl combined with chondroitin 400mg is cited as being the optimal ingredient balance glucosamine is essential to playing a role in the smooth working of cartilage tendons and ligaments combined with chondroitin which is found naturally in the cartilage it helps form a sponge like substance that acts as a shock absorber our chondroitin is the best quality marine sourced which is 90 pure