While borage, evening primrose and black currant are well known GLA sources, GLA safflower oil delivers the most potent concentration of GLA available. With 400 mg per gram, it is twice as concentrated as borage and four times as concentrated as evening primrose. ## Hi Ardbeg, Thank you for providing that information. For those who don't know, GLA stands for Gamma-linolenic acid which is an omega-6 fatty acid that can help reduce inflammation and cell growth. The body uses GLA to produce prostaglandins (hormone-like substances that aid the regulation of the immune system). GLA can be used to treat or prevent a variety of conditions, including: rheumatoid arthritis allergies depression chronic fatigue syndrome psoriasis eczema (and other skin related issues) metabolic syndrome high c...