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The IUD is the most common reversible method of contraception worldwide, and it is gaining popularity amongst women in the U.S. Today, women can choose between two different IUDs: the copper-releasing device (Paragard) or the progestin-releasing device (Mirena).
Copper T380A IUD (Paragard)
Copper wire wound around the T-shaped frame
Copper ions interfere with sperm mobility and incite a foreign-body reaction that results in a spermicidal environment
Approved to remain in place for up to ten years
Patients may learn more about Paragard at http://www.paragard.com (Please note: provision of this link does not imply UMHS endorsement of the content on the Paragard website).
IUDCPCopperT380A.gif by ASwann at en.wikipedia [Public domain], via Wikimedia Commons. No higher resolution available.
Levonorgestrel IUD (Mirena)
T-shaped frame contains the progestin, levonorgestrel
Progestin thickens cervical mucus, creating a barrier to sperm, and thins the endometrium approved for up to five years of use
Patients can learn more about Mirena at http://www.mirena-us.com. (Please note: provision of this link does not imply UMHS endorsement of the content on the Mirena website).
Mirena IntraUterine System.jpg by Hic et nunc (Own work) [Public domain], via Wikimedia Commons.
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