Superfluous to risky: nutritional supplements fail at Stiftung Warentest. No conclusive evidence for any of the products examined that it relieves joint pain or prevents the development of osteoarthritis.

High doses of vitamin E may increase the risk of prostate cancer in men over 55 years of age. Illegal advertising promises were found on the packaging of some products. The cost of a daily dose of these products varies significantly, ranging from 14 cents to 2.18 euros. However, scientific proof of the effectiveness of these substances in relation to the treatment or prevention of osteOarthritis is still lacking.