Glucosamine/Chondroitin- Ultra Rx-Joint Cream Nature's Plus Advanced Therapeutics Glucosamine Chondroitin MSM Ultra Rx-Joint Cream is precisely calibrated topical formula that synergistically combines pure glucosamine, chondroitin and methylsulfonylmethane (MSM). Each penetrating drop is then formulated with a proprietary botanical/nutrient-rich base, which includes silicon, magnesium, copper, zinc and shea butter for maximum benefits. 4 OZ