Copper T, also known as the copper intrauterine device (IUD), is a small T-shaped contraceptive device that is placed inside the uterus. It contains copper wire coiled around the frame, which produces an inflammatory reaction that is toxic to sperm and eggs, preventing pregnancy. The copper IUD is a non-hormonal contraceptive method that is more than 99% effective at preventing pregnancy and can last for up to 5-12 years, depending on the type. It is inserted into the uterus by a healthcare provider and is a long-term, reversible birth control option. The copper IUD is safe to use while breastfeeding and can be removed at any time if pregnancy is desired