Meta-analysis shows minimal effects of glucosamine and chondroitin on joint pain

A network meta-analysis involving 3,803 patients has found that glucosamine and chondroitin provide only minimal pain reduction for joint discomfort. The study reported an average pain reduction of -0.5 cm on the Visual Analogue Scale (VAS) for the combination, noting that clinical results vary significantly depending on the study design.

Regarding hyaluronic acid administered orally, current evidence remains unclear regarding its systemic absorption and its ability to produce tissue-level effects.

While these supplements are among the most frequently used for degenerative joint wear, the analyzed data—which includes 747 scientific works such as 137 controlled human studies—suggests that the measured effects on pain and function are small and may not constitute a clinical breakthrough. Specific studies cited include the MOVES study, where a combination of chondroitin sulfate and glucosamine hydrochloride was found not to be inferior to celecoxib, and the GAIT study, which showed no statistically significant superiority of the combination over a placebo.