Using Evening Primrose Oil can be beneficial as it contains a high content of Gamma Linolenic Acid (GLA). This essential omega-6 fatty acid is needed for metabolism, but can't be made by the body.* GLA promotes cartilage and joint health, can relax smooth muscle, and help maintain regular cholesterol and nerve functionality.* In addition, traditional use of the oil has been noted to reduce mild PMS-related symptoms.* Evening Primrose Oil has long been popular for its health properties in Europe and North America.