Intrauterine devices, or IUDs, last up to 12 years, according to the Planned Parenthood Federation of America. The copper ParaGard IUD is effective for 12 years. Mirena and Skyla IUDs, which contain the hormone progestin, last five and three years, respectively.Continue Reading
An IUD is a T-shaped device that a physician places in a woman's uterus, according to WebMD. IUDs damage sperm and prevent fertilized eggs from implanting in the uterine lining.
IUDs are a safe and effective form of birth control, but IUDs do not protect against sexually transmitted diseases, according to the Planned Parenthood Federation of America. In a few cases, an IUD may slip out of place. To prevent complications, a woman should have regular checkups and check herself between her periods to see if the IUD is still in place.Learn more about Birth Control