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White Plains, New York, November 27, 2017 — Flaxseed oil and other popular seed oil are popular supplements that provide omega-3 and omega-6 fatty acids and may help with inflammatory conditions. But which seed oil supplements are the best?

To find out, recently tested popular flaxseed oil, black currant oil, borage oil, evening primrose oil and hemp oil supplements sold in the U.S. and Canada. The most common problem found was a lack of freshness, as indicated by high levels of oxidation in several products -- one of which was also found to contain less than its listed amounts of particular fatty acids. Among products that passed all tests and were well-priced, identified its Top Picks. The findings are available online now in's Black Currant Oil, Borage Oil, Evening Primrose Oil, Flaxseed Oil, and Hemp Oil Supplements Review.

Flaxseed and hemp oils are good sources of the omega-3 fatty acid ALA (alpha-linolenic acid). Black currant, borage, and evening primrose oils are good sources of the omega-6 fatty acid GLA (gamma-linolenic acid). Preliminary evidence suggests seed oil supplements containing these fatty acids may be helpful for rheumatoid arthritis, diabetic neuropathy, dry eye, and other conditions.

The new Review summarizes the clinical evidence for these oils, dosage information, potential side effects and drug interactions, tips for what to look for on labels and how to properly store these supplements.

Included in the review are test results and quality comparisons for 27 supplements. These include 17 selected for testing by (including two products for pets) and 10 that passed the same testing through CL's voluntary Quality Certification Program, plus information about a product that is similar to another that passed testing. Products covered in the review are: Barlean's Organic Oils Flax Oil, Finest Nutrition (Walgreens) Flaxseed Oil, Flora Udo's Choice Udo's Oil, GNC Natural Brand Flax Seed Oil, HALO Purely For Pets Dream Coat, Health From the Sun Borage Liquid Gold, Jarrow Formulas Borage, Life Extension Mega GLA with Sesame Lignans, Manitoba Harvest Hemp Oil, Member's Mark [Sam's Club] Natural Flaxseed Oil, Nature's Answer Liquid Evening Primrose Oil, Nature's Bounty Evening Primrose Oil, Nature's Way EFA Gold Flax Oil, Super Lignan, Nature's Way EfaGold Borage, NatureWise Organic Flaxseed Oil, Nutiva Hemp Oil, Black Currant Seed Oil, Puritan's Pride Evening Primrose Oil, Radiance Platinum [CVS] Evening Primrose Oil, Solaray Black Currant Seed Oil, Solgar Evening Primrose Oil, Spring Valley [Walmart] Evening Primrose Oil, Standard Process MediHerb Evening Primrose Oil, The Missing Link Ultimate Canine Skin & Coat, The Vitamin Shoppe Omega 3-6-9, Trunature [Costco] Evening Primrose Oil, Twinlab Ultra GLA 300, Vitamin World Evening Primrose Oil and Webber Naturals Flaxseed Oil.

Founded in 1999, is a leading provider of consumer information and independent evaluations of products that affect health and nutrition. Membership to is available online and provides immediate access to reviews of more than 1,000 products from over 400 brands. The company is privately held and based in Westchester, New York. It has no ownership from, or interest in, companies that manufacture, distribute, or sell consumer products.

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