Evening primrose oil is a widely known herbal supplement that is made from the seeds of the Oenothera biennis plant. It has been used for centuries for various medicinal purposes due to its numerous health benefits. There are several synonyms for evening primrose oil, which include gamma-linolenic acid (GLA), Oe-no-ther-a, king's cure-all, night willow herb, and scabish. This oil is often used to treat skin problems like eczema, psoriasis, and acne, hormonal imbalances, menopausal symptoms, age-related memory impairment, and many other ailments. Due to its versatility and effectiveness, evening primrose oil continues to be a popular herbal supplement across the world.