Evening Primrose Oil and Starflower Oil are a valuable source of the important fatty acids Linoleic Acid (LA) and Gamma Linolenic Acid (GLA). These essential fatty acids cannot be made by the body, so we need to get them from our diet (which is difficult) or from quality supplementation. Human breast milk is one of the richest natural sources of GLA, whilst LA can be found in safflower, hemp and sunflower oils. The human body metabolises Linoleic Acid into GLA, which is essential for the production of hormones called prostaglandins. Our evening primrose oil capsules offer fatty acids at high doses and precise levels so you can supplement with confidence.