Hello Ahsan Alam,

Hormone releasing intrauterine devices or hormonal IUDs are contraceptive devices placed in a woman’s uterus  to prevent pregnancy by continuously releasing a low dose of certain  hormones.

It consists of a T-shaped plastic device, about the size of a matchstick, which is fitted inside the uterus and slowly releases the hormone levonorgestrel, a form of progestogen. It provides contraception for up to five years and is considered 99.8% effective.

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