Advanced Therapeutics TRIPLE STRENGTH Ultra Rx-Joint® is the most advanced joint support formula ever developed! For the first time, the proven benefits of glucosamine, chondroitin, and MSM have been united with the exciting cutting-edge support of Celadrin® and black cherry. The result is a unique formulation that provides unparalleled nutritional support for peak joint lubrication and mobility. TRIPLE STRENGTH Ultra Rx-Joint is specially formulated to provide these soothing benefits around the clock.For those who need even greater, extra-strength effects, TRIPLE STRENGTH Ultra Rx-Joint safely offers the flexibility of extra strength directions. Four tablets twice daily provide 400 mg vitamin C (667%DV), 40 mg manganese (2000%DV), 2000 mg glucosamine sulfate, 2000 mg MSM, 1600 mg chondroitin sulfate, 1500 mg Celadrin, and 200 mg of black cherry, for the ultimate in soothing connective tissue support.