Evening Primrose Seed Oil is rich in unsaturated fatty acids, specially in GLA (Gamma Linolenic Acid) which balances Omega-3 and Omega-6 fatty acids. Richest source of Vitamin-F (Linoleic Acid) in the body which should be covered from outside sources. Decreases symptoms of PMS (Premenstrual Syndrome), mentsrual disorders, menopause and endometriosis.