Subgroup analyses of the effectiveness of oral glucosamine for knee and hip osteoarthritis: a systematic review and individual patient data meta-analysis from the OA trail bank

This analysis of 5 placebo-controlled studies (for which individual patient data were shared; out of 21 eligible studies identified) found no difference between glucosamine and placebo for pain or function (both short- and long-term) overall or in the predefined subgroups.