Evening primrose is a yellow flower that grows in the United States and certain parts of Europe. It was originally used by Native Americans in poultices to speed wound healing as well as an infusion for its astringent and sedative properties. Cherokee Indians applied the plant’s root to hemorrhoids, while the Iroquois natives used it as a salve for skin issues. In the 17th century Europeans discovered the plant and used it to treat a wide variety of ailments, including asthma, psoriasis, eczema, whooping cough, premenstrual syndrome, Raynaud’s Disease, rheumatoid arthritis, multiple sclerosis, and mastalgia. During World War II the seeds were even roasted and used as a coffee substitute. Throughout the 1970s evening primrose continued to be a popular herbal supplement that was sold.