Norethindrone is a prescription birth control medication that is used to prevent pregnancies. It is also indicated for use as a treatment for irregular periods, endometriosis (a condition in which uterine tissue grows outside of the uterus), and amenorrhea (lack of periods in women who are not pregnant).
It is important to note that while combination birth control pills offer significant benefits, they do not protect against sexually transmitted infections (STIs). Talk to your doctor about your health history and any medication you are currently taking before you start taking a combination birth control pill.