Menopause Support Dietary Supplement Promotes Hormone Balance Science-Backed Quality Since 1969 Solvent Free High-concentration source of gamma-linolenic acid (gla) for promoting skin moisture and elasticity. Women of the world cherish evening primrose oil (EPO). Swanson EPO includes high levels of gamma linolenic acid, an important essential fatty acid for support throughout a woman's monthly cycle, and it helps keep the skin healthy. Each softgel contains 500 mg of our exclusive OmegaTru EPO.