What is a copper IUD?
A copper intrauterine device (IUD) is a type of non-hormonal birth control. There are also hormonal IUDs, but copper versions do not contain any hormones. This can be great for women who experience negative side effects from birth control that contains hormones. At the moment, ParaGard is the only copper IUD available in the United States.
How do copper IUDs work?
Copper IUDs have a T-shaped plastic frame with a very thin string at the end. A thin copper wire is coiled around the plastic parts of the device, which creates an inflammatory reaction in your uterus that is toxic to both sperm and eggs, preventing pregnancy.