Termed as almost mistake-proof by Planned Parenthood, the intrauterine device (IUD) is a small contraceptive device that is inserted into the uterus to prevent pregnancy. The IUD is made of plastic and shaped into a T.
An IUD is 99% effective. It is called mistake-proof since once it is inserted, you don’t have to keep up with swallowing pills, applying a patch or remember to wear a condom.