Evening Primrose Oil helps provide Nutritional support for women with PMS. Best product of its kind on the market. For centuries, women of all ages have depended on the reliability of Evening Primrose Oil. It contains one of the richest sources of Gamma-Linolenic Acid (GLA - 117 mg per serving) a fatty acid not made by the body and not commonly found in food. Helps provide nutritional support for women with PMS. EPO used for Royal Brittany is 100% natural, cold-processed, organically cultivated on protected, pesticide-free growing fields. Void of Hexane and all other solvent residue. Assures quality, reliability and purity. The consistency of potency is guaranteed by assay.