The oil, pressed from the seed, is rich in linoleic acid, an essential fatty acid (EFA). "Essential" means that we have to consume the nutrient because the body does not produce it.
Image courtesy of USDA Agricultural Research Service.
Evening Primrose Oil also supplies another fatty acid, known as gamma-linolenic acid (GLA), not to be confused with Alpha-Linolenic Acid (LNA), which is one of the omega-3 fatty acids.
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