GLA (Gamma-Linolenic Acid) Supplements and Information

Gamma-Linolenic Acid (GLA) is found as a fatty acid in some plant seed oils. These include evening primrose seed oil, borage seed oil, blackcurrant seed oil, and some fungal sources. In evening primrose oil, GLA makes up 7 to 14 of the total fatty acids, in borage seed oil about 25, and in black currant seed oil, about 20. GLA is produced naturally in the body and under some conditions may become an essential fatty acid. GLA also occurs naturally as triacylglycerols (TAGs). The sterospecificity of GLA varies among different oil sources.

Dosage and Administration

There are several forms of GLA supplements. GLA is available in concentrate form, evening primrose oil, borage seed oil, and blackcurrant seed oil. Doses tried for rheumatoid arthritis and other conditions range from about 360 milligrams to 2.8 grams daily in divided doses and usually with meals. Doses of up to 2 grams daily may be helpful in those with elevated triglycerides. The concentration of GLA varies in the different oil preparations, and depending on the concentration, the number of capsules daily may be smaller or larger in order to make up the desired dose. Read the directions on the manufacturers label.

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