NOW? Super Primrose Oil is a high potency Evening Primrose (EPO) supplement containing naturally occurring Gamma Linoleic Acid (GLA). GLA is a fatty acid that is important for healthy inflammatory and immune response. Evening Primrose Oil may be used to provide nutritional support for mild discomfort associated with PMS. Evening Primrose Oil also helps maintain healthy skin and circulatory function.* NOW? Super Primrose is hexane free.