Source Naturals Flax Seed-Primrose Oil provides both omega-6 and omega-3 essential fatty acids (EFAs). EFAs act as precursors to molecules, such as prostaglandins, thromboxanes and leukotrienes, which Enhance regulate cellular function. EFAs have been shown to play a role in blood pressure maintenance, Defense mechanism of body balance, sustaining healthy skin and providing nutritional support during women's cycles. Flaxseed oil, a rich vegetable source of alpha linolenic acid (ALA), and evening primrose oil, a natural source of gamma linolenic acid (GLA), provide a potent combination of EFAs.