Evening primrose oil is often cited as the most sensational prevention discovery since vitamin C. It contains a pain reliever (phenylalanine), which is why it is increasingly used to treat chronic headaches. It is studied worldwide for its positive effects on aging processes, alcoholism, acne, heart disease, hyperactivity, weight control, obesity, PMS (pre-menstrual syndrome), and schizophrenia. It has so many preventive and therapeutic properties that it now plays a key role in maintaining our health and avoiding diseases.