is an extremely effective method of birth control. It is a long term (5 years) reversible method with a quick return to fertility. One of its “side effects” is lighter or absent periods. This effect is so pronounced that the company (Bayer) received FDA approval for use of Mirena for the treatment of menorrhagia (heavy menstrual bleeding).
One study in England demonstrated that half of women waiting for a hysterectomy cancelled the surgery after placement of the Mirena to control menorrhagia.
As far as contraceptive efficacy, Mirena is one of the most effective reversible methods of birth control available. The Mirena IUD is 99.9 percent effective. This means that less than one out of every 100 women who use Mirena will become pregnant in one year.
Of special caution: Most pregnancies happen to Mirena users when their IUDs slide out without them realizing it. This is uncommon and most likely to happen during the first month. Even though the chance of pregnancy while an IUD is in place is extremely low, if it does happen, you should have the IUD removed as soon as you are aware that you’re pregnant.
The Mirena device costs about $710 retail when ordered in the United States. Your health insurance may cover this but deductibles/coinsurance would apply. Some patients order the device from Canada at a cost of about $210. It will be mailed to their home. They can bring it to the office to be inserted by their gynecologist. You should know that NONE of the Mirena devices are manufactured in the United States; all are imported from Finland.