Intrauterine device (IUD)
An intrauterine device (IUD) is a method of birth control that is placed inside the uterus to prevent pregnancy. Hormonal IUDs release a type of progestin to prevent pregnancy. Copper IUDs do not use hormones to prevent pregnancy.
All IUDs have a plastic string that extends through the opening of the cervix into the vagina. The string allows a health professional to remove the device at your request or at the end of its effectiveness (usually 5 to 10 years, depending on the type).
The IUD is very effective at preventing pregnancy.
Current as of: August 2, 2022
Author: Healthwise Staff
Medical Review:Sarah Marshall MD - Family Medicine & Adam Husney MD - Family Medicine & Rebecca Sue Uranga MD - Obstetrics and Gynecology & Kara L. Cadwallader MD - Family Medicine