* The Energy Supplements * Gluten Free * OptiMSM Optimal Health. Optimal Purity * Extended Delivery * Triple Action with MSM * Dietary Supplement * Optimal Purity. Optimal Health Nutritional support for healthy joint function. Advanced Therapeutics Glucosamine Chondroitin MSM Ultra Rx-Joint is a targeted, condition-specific formulation designed to nutritionally support healthy joint function. Each triple-action tablet supplies the critical joint nutrients-glucosamine sulfate, chondroitin sulfate and methylsulfonylmethane (MSM)-for peak joint lubrication and mobility. In a special base which provides for the gradual release of ingredients over a prolonged period of time.