norethindroni

Norethindrone, also known as norethisterone, is a synthetic progestogen, a type of progesterone hormone. It is a widely used active ingredient in hormonal contraceptives, including birth control pills, patches, and vaginal rings. In these applications, norethindrone works by preventing ovulation, thickening cervical mucus to block sperm, and thinning the lining of the uterus. It is often combined with an estrogen in combined oral contraceptives.

Beyond contraception, norethindrone is prescribed to treat various gynecological conditions. It is used in hormone replacement therapy to alleviate menopausal symptoms such as hot flashes and vaginal dryness, particularly for women who still have a uterus, as it helps protect the uterine lining from the effects of estrogen. Norethindrone is also employed to manage irregular menstrual bleeding, painful periods (dysmenorrhea), and endometriosis, a condition where uterine tissue grows outside the uterus. It can also be used to treat or prevent abnormal uterine bleeding.

Norethindrone is available in different formulations and dosages depending on its intended use. Like all medications, it can have side effects. Common side effects may include changes in menstrual bleeding patterns, breast tenderness, nausea, headaches, and mood changes. Less common but more serious side effects can occur, and it is important to discuss potential risks and benefits with a healthcare provider.