Glucosamine and/or chondroitin: No help

Another assessment of studies, i.e., a meta-analysis, finds no benefit of glucosamine and/or chondroitin, on joint pain or narrowing of joint space: "Compared with placebo, glucosamine, chondroitin, and their combination do not reduce joint pain or have an impact on narrowing of joint space. Health authorities and health insurers should not cover the costs of these preparations, and new prescriptions to patients who have not received treatment should be discouraged." 

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