Oral administration of hydrolyzed collagen alleviates pain and enhances functionality in knee osteoarthritis: Results from a randomized, double-blind, placebo-controlled study.

35.5 ± 8.6 cm, mean difference, −22.6; 95 % CI, −19.5 to −25.8; p < 0.001) as well as the difference between the relative changes in pain scores proves to be highly significant (p < 0.001) in favor of the test product.

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