The key differences between hormonal IUDs (Mirena, Skyla, Liletta, and Kyleena) and nonhormonal IUDs (Paragard) are what they’re made of, how they work, how long they last, and possible side ...

Bayer's big-selling contraceptive Mirena has been approved in Europe to provide up to eight years of pregnancy protection, which the company says is the longest of any device of its kind.

Researchers in one 2016 study looked at more than 1,800 people who used the Mirena IUD. After a year, those who’d started out with light or short periods were more likely to stop bleeding ...