Evening Primrose Oil (EPO) is a rich natural source of Gamma Linolenic Acid (GLA) essential for the production of Prostaglandins to help maintain hormonal balance and support healthy skin. Each capsule provides 500mg of Evening Primrose Oil and 50mg of Vitamin E for added antioxidant benefits. HealthAid Evening Primrose Oil 500mg Capsules are suitable for vegetarians and vegans.