You Deserve the Best Quality Guaranteed The Energy Supplements Evening Primrose Oil Supplement Naturally Supplying 150 mg GLA Hypo-Allergenic Gluten Free Nutritional Support for Overall Well-Being. Maximum Potency Ultra EPO 1500 supplies 150 mg of gamma linolenic acid (GLA). Each maximum strength softgel contains the highest grade, cold-pressed oil from select, organically grown European evening primrose. No harsh chemical solvents (such as hexane) or high temperatures are ever used in the extraction process, thereby guaranteeing maximum potency and purity of this beneficial botanical extract.