Ethinylestradiol is a man-made form of the naturally occurring female hormone called oestrogen. It is prescribed to treat period (menstrual) problems, and also to help ease menopausal symptoms. It is usually prescribed alongside another female hormone called a progestogen.
This is a companion discussion topic for the original article at https://patient.info/medicine/ethinylestradiol-for-menopausal-symptoms-or-menstrual-disorders