Contains sodium-free potassium stabilized glucosamine sulfate, bovine chondroitin sulfate and pure MSM. (OptiMSM). Product Features Doctor’s Best Glucosamine/Chondroitin/MSM featuring OptiMSM supports joint structure, function and comfort A potent combination of three proven, purified ingredients that help build the cushy cartilage that serves as a shock absorber for your joints Each serving provides 1500mg of...