Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Evening Primrose (Oenothera biennis) has been traditionally used to support joint health, particularly in the context of conditions like rheumatoid arthritis. The oil extracted from its seeds contains gamma-linolenic acid (GLA), an omega-6 fatty acid thought to have anti-inflammatory properties. Traditional herbal medicine systems, especially in Europe and North America, have used evening primrose oil (EPO) to alleviate symptoms such as joint pain and stiffness.

Some small clinical studies and reviews have explored EPO’s effects on joint health, especially in rheumatoid arthritis. However, results are mixed—while a few studies reported mild improvements in pain and morning stiffness, the overall evidence is inconsistent and often limited by study quality, size, and methodology. For osteoarthritis, there is even less supportive data. Major reviews, including those by the Cochrane Collaboration, generally conclude that there is insufficient robust evidence to recommend evening primrose oil as an effective treatment for joint conditions.

In summary, the use of evening primrose oil for joint support is primarily based on traditional uses and limited preliminary research rather than strong scientific validation. People considering EPO for joint health should consult healthcare professionals, as it should not replace proven medical therapies.

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