There are two types of intrauterine contraceptives (IUC), non-hormonal copper devices (known as intrauterine devices, or IUDs) and hormonal devices (known as intrauterine systems, or IUSs).
Mirena is an IUS, meaning that it contains a hormone and relies on the hormone for preventing pregnancy. Your healthcare provider inserts the device into the uterus, where it can remain for up to five years.
Mirena slowly releases a low level of levonorgestrel (a progesterone hormone). In some women (less than half), Mirena works by stopping ovulation (the maturation and release of eggs from the ovaries). However, for most women, Mirena works in other ways (and ovulation continues as usual). In these women, Mirena alters the cervical mucus (the fluid of the cervix, which is the lower, narrow part of the uterus that is connected to the vagina), making it more difficult for sperm to enter the uterus. Mirena also decreases the ability of sperm to survive in the uterus. Lastly, Mirena alters the lining of the uterus (called the endometrium), making it less receptive to an embryo.
Mirena Use in Children and Teens
Mirena is approved for use in women of reproductive age. This means that it is not approved for use in girls who have not yet had their first menstrual period.
On occasion, your healthcare provider may recommend Mirena for something other than contraception. This is called an "
off-label" use. At this time, there are no universally accepted off-label Mirena uses.
Previous
Add this article to your Favorites
Email this article
Print