Summary: Evening primrose oil contains an omega-6 essential fatty acid called gamma-linolenic acid (GLA), believed to be the active ingredient. GLA is officially licensed to treat non-cyclical breast pain (mastalgia) in England and for the treatment of eczema in many countries, including England, Germany, Ireland, South Africa and Italy. Scientific Evidence: UsesThese uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare ....
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