Mirena Contraceptive

Women who do not want to use oral contraceptives may consider Mirena®, an intrauterine system (IUS) that is at least as effective as birth control pills and possibly more effective than other forms of birth control. It works similar to the pill in that the device prevents ovulation and causes changes to the cervical mucus and the uterus that prevent pregnancy from occurring.
Mirena can remain in the uterus for up to five years, and is designed for women who have had at least one child.
When considering Mirena as a contraceptive device, keep in mind that if you have a history of ectopic pregnancy, ovarian or cervical cancer, or a blood-clotting disorder, this may not be the right method of birth control for you. In addition, side effects are possible, and can include serious infections, allergic reactions, and menstrual changes.
(To learn more about this contraceptive, click Mirena. Other topics covered in this article include safety precautions to keep in mind, additional side effects, and what else to discuss with your healthcare provider before using it.)
Last reviewed by: Kristi Monson, PharmD
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