Supplement. Pure & unrefined. Gluten free. Non-GMO. Pathway to a better life. Estd. 1989. Nurture and Nourish Your Body with Barlean's Evening Primrose Oil: EPO is revered because it contains a significant amount of gamma-linolenic acid (GLA). GLA is created in the body from dietary essential fats such as those found in flax seed oil. However, in some people GLA is not produced adequately. EPO offers a source of GLA for these individuals. Learn more about a pathway to a better life: barleans.com; 800/445-3529; Barlean's, Ferndale, WA 98248. From our family to yours - Barbara Barlean, David Barlean, Bruce Barlean. Product of USA.