This article originally appeared in

Inaugural Issue
September 2004

Evening Primrose Oil (Oenothera biennis L.): An Evidence-based Systematic Review by the Natural Standard Research Collaboration

Author(s)

Ethan Basch, MD, MPhil
Catherine Ulbricht, PharmD
E-P Barrette, MD
Samuel Basch, MD
Steve Bent, MD
Heather Boon, BScPhm, PhD
Cynthia Dacey, PharmD
Edzard Ernst, MD, PhD
Mamta Vora, PharmD
Peter Wolsko, MD
Paul Hammerness, MD

 

 

 

 

Abstract: Evening primrose oil (EPO) contains an omega-6 essential fatty acid, gamma-linolenic acid (GLA), which is felt to be the active ingredient. EPO has been studied in a wide variety of disorders, particularly those affected by metabolic products of essential fatty acids. However, high-quality evidence for its use in most indications is still lacking. GLA has been officially licensed for the treatment of non-cyclical breast pain (mastalgia) in England, and for the treatment of eczema in numerous countries, including England, Germany, Ireland, South Africa and Italy

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