What is Mirena : Mirena is manufactured by Bayer HealthCare Pharmaceuticals Inc. Mirena is a form of birth control called an IUD (Intrauterine Device) or an IUS (Intrauterine Contraceptive System). The word “intrauterine” simply means “inside the womb”. An IUD is a small “T” shaped device that is inserted into the uterus to help prevent [...]