An intrauterine device (IUD) is a small, plastic, T-shaped device
that is inserted into the uterus to prevent pregnancy. IUDs contain copper or
the hormone levonorgestrel (LNg). Plastic strings tied to the end of the IUD
hang down through the opening of the uterus (cervix) into the vagina.
Primary Medical Reviewer
Sarah Marshall, MD - Family Medicine
Specialist Medical Reviewer
Femi Olatunbosun, MB, FRCSC - Obstetrics and Gynecology
How this information was developed to help you make better health decisions.