A contraceptive intrauterine device marketed under the brand name Mirena, which includes the female hormone levonorgestrel (a progestogen). Once inserted into the uterus, the Mirena device consistently releases a minimal dose of the hormone. Replacement is necessary after a duration of five years.
Following its insertion, the device might lead to irregular bleeding or slightly increased menstrual flow in the initial stages, but typically, menstruation becomes significantly lighter after approximately three months. While some women experience a cessation of periods, the majority continue to ovulate. This device proves especially beneficial for individuals requiring an intrauterine device (IUD) yet facing heavy menstrual periods.