Using a Mirena Mirena is a form of contraceptive that releases hormones directly into the womb. The technical term for this type of birth control is intrauterine system, or IUS. Mirena uses a synthetic hormone called levonorgestrel that mimics the action of progesterone, one of the main sex hormones in women. Although it's mostly used as a form of birth control, Mirena is sometimes also used to stop abnormally heavy menstrual periods and to keep the womb lining from growing...
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