... is the oil from the seed of the evening primrose plant. Evening primrose oil is used for skin disorders such ... ), alcoholism, Alzheimer’s disease, and schizophrenia.Some people use evening primrose oil for chronic fatigue syndrome (CFS); asthma; nerve ... , starting labor, and preventing late deliveries. Women also use evening primrose oil for premenstrual syndrome (PMS), breast pain, endometriosis, ...