Three capsules contain: * Glucosamine HCI 1500 mg * Chondroitin Sulfate 1200 mgWorks Better. Lasts Longer.The ONLY brand proven effective in controlled, published U.S. Studies to reduce joint pain.Shown in laboratory tests to protect cartilage cells from breakdown.Cosamin® DS has set a standard of excellence for glucosamine/chondroitin sulfate nutraceuticals. Cosamin® DS has been proven effective in controlled clinical studies conducted and published in the U.S. In fact, in the new book, The Arthritis Foundation"s Guide to Alternative Therapies, patients are reminded, "When a supplement has been studied with good results, find out which brand was used in the study, and buy that".