Medically reviewed by Melissa Nieves, LND Evening primrose has been studied for conditions related to menstruation and ...

Some research suggests evening primrose oil may have a positive effect on menopause-related hot flashes, but other studies suggest no effect. Speak with your doctor before trying it for their advice.

Examples include soybeans, B vitamins, evening primrose oil, and dong quai. Estrogen and progesterone are two major sex hormones in the human body. Estrogen is responsible for sex characteristics ...