Evening Primrose Oil for Joint Pain Relief

Research suggests that evening primrose oil, primarily through its active compound gamma-linolenic acid (GLA), may help reduce pain intensity and improve physical function in people with rheumatoid arthritis. The evidence base includes two Cochrane systematic reviews and a focused clinical review, all pointing in a supportive direction, with the most rigorous of these — a 2011 Cochrane meta-analysis — explicitly finding reductions in pain and disability among rheumatoid arthritis patients. A 2018 narrative review adds mechanistic context, proposing that GLA's anti-inflammatory effects operate through suppression of inflammatory signaling molecules such as IL-1β, IL-6, and TNF-α, though this review summarized existing literature rather than conducting new trials. Taken together, the available evidence is modestly encouraging, but the body of research remains limited in scope and much of it is specific to rheumatoid arthritis, meaning broader conclusions about joint pain in general should be drawn with caution.