Evening primrose seeds contain an oil with a high concentration of compounds rarely found in plants: essential fatty acids, specifically gamma-linolenic acid. In one study, reported in The Review of Natural Products, 79 people with high cholesterol took 4 grams of Efamol every day for three months (which provides about 320 mg of GLA), and their average cholesterol level fell 31.5 percent. The suggested dose for evening primrose oil starts at 1-gram gelcaps twice or three times a day. High cholesterol requires professional care, so consult your physician about GLA.
