Essential Fatty Acids

What is Evening Primrose Oil?
Evening Primrose Oil, a natural source of gamma-linolenic acid (GLA), is well known for modifying the inflammatory response and maintaining hormonal balance. This versatile oil comes from the tiny seeds of a wildflower, Oenothera biennis L., native to North America, and has been studied for its positive influence on prostaglandin synthesis. GLA may also support the healthy growth and maintenance of skin, hair, and nails.

All of the evening primrose oil used in the Weil formula is cold pressed without the use of solvents. Weil Evening Primrose Oil is encapsulated exclusively in vegetarian, liquid-filled capsules.

"Evening primrose oil is a natural source of a fatty acid called GLA (gamma-linolenic acid). Very hard to come by in the diet, GLA is an effective anti-inflammatory agent with none of the side effects of anti-inflammatory drugs. It also promotes healthy growth of skin, hair, and nails. I frequently suggest evening primrose oil for skin conditions (including brittle nails and hair), arthritis, autoimmune disorders, and premenstrual syndrome. Do not expect immediate results; it takes six to eight weeks to see changes after adding GLA to the diet."

Find out if evening primrose oil is right for you – get your free personalized recommendation from Dr. Weil's Vitamin Advisor.

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Weil Nutritional Supplements are based on stringent scientific research. Current, valid studies (published in peer-reviewed scientific journals) are the basis of our formulations, and all products are designed, selected, and approved by Dr. Weil and a team of physicians and researchers who are experts in the field of nutritional supplementation.

All our products are made by manufacturers who must meet our strict guidelines for quality control, as well as Good Manufacturing Practices in all aspects of production, testing and packaging. All product ingredients are tested both prior to and after manufacturing to ensure that the constituents and doses are correct. Additionally, our products are free of any preservatives, artificial colors or flavorings, and non-essential additives.