Oenothera biennis . The plant has its origins in China. Evening primrose oil is used for eczema, rosacea, psoriasis, acne, rheumatoid arthritis, osteoporosis, raynaud’s syndrome, multiple sclerosis (MS), Sjogren’s syndrome, cancer, high cholesterol, heart disease, dyspraxia, intermittent claudication, alcoholism, alzheimer’s disease, schizophrenia, chronic fatigue syndrome, asthma, nerve damage related to diabetes, neurodermatitis, hyperactivity in children and attention deficit-hyperactivity disorder (ADHD), obesity and weight loss, whooping cough, gastrointestinal disorders including ulcerative colitis, irritable bowel syndrome, and peptic ulcer disease, for preventing high blood pressure (pre-eclampsia), shortening labor, starting labor, and preventing late deliveries, for premenstrual syndrome (PMS), breast pain, endometriosis, inflammation from Lupus, alcohol withdrawal symptoms, impotence and female infertility, fibrocystic breast disease and skin ulcers. The oil nourishes the scalp, hair, and nails. 
In foods, Evening primrose oil is used as a dietary source of essential fatty acids. It is also used in the manufacturing of soaps and cosmetics. 

Oenothera biennis . The plant has its origins in China. Evening primrose oil is used for eczema, rosacea, psoriasis, acne, rheumatoid arthritis, osteoporosis, raynaud’s syndrome, multiple sclerosis (MS), Sjogren’s syndrome, cancer, high cholesterol, heart disease, dyspraxia, intermittent claudication, alcoholism, alzheimer’s disease, schizophrenia, chronic fatigue syndrome, asthma, nerve damage related to diabetes, neurodermatitis, hyperactivity in children and attention deficit-hyperactivity disorder (ADHD), obesity and weight loss, whooping cough, gastrointestinal disorders including ulcerative colitis, irritable bowel syndrome, and peptic ulcer disease, for preventing high blood pressure (pre-eclampsia), shortening labor, starting labor, and preventing late deliveries, for premenstrual syndrome (PMS), breast pain, endometriosis, inflammation from Lupus, alcohol withdrawal symptoms, impotence and female infertility, fibrocystic breast disease and skin ulcers. The oil nourishes the scalp, hair, and nails. 
In foods, Evening primrose oil is used as a dietary source of essential fatty acids. It is also used in the manufacturing of soaps and cosmetics.