Thorne's Glucosamine & Chondroitin is NSF Certified for Sport®. Supplementing with glucosamine and chondroitin sulfates can provide significant benefit for musculoskeletal support.* Chondroitin sulfates, a category of glycosaminoglycans (GAGs), are required for the formation of various important components of joint cartilage.* These two nutrients – glucosamine and chondroitin – support joint function and mobility by enhancing the body's production of GAGs and preventing their degradation.* Clinical research indicates that supplementing with chondroitin sulfates supports joint structures.* Some studies have concluded that the combination of glucosamine sulfate and chondroitin sulfate protects and supports joint surfaces more effectively than glucosamine sulfate alone.*
Because an athlete needs to know that his or her supplements are trustworthy and compliant, every batch of an NSF Certified for Sport® product is tested for compliance with label claims and to ensure the absence of more than 200 substances banned by many major athletic organizations, including stimulants, narcotics, steroids, diuretics, beta-2 agonists, and masking agents.