When considering a woman’s contraceptive options, IUDs bear discussion. Some women have familiarity with IUD use, others have “heard of them”, but don’t have a real concept of how they’re used or how they work. An IUD (Intra-Uterine-Device) is a contraceptive device placed inside the uterus, in an in-office procedure, that generally takes less than 5 minutes for your doctor to insert. Pregnancy prevention occurs by a ‘foreign body’ inflammatory reaction that occurs based on the metal or plastic frame (T-shaped, about the size of an open paperclip) and by the local effect of the medication released by the IUD (either copper or progesterone.) This ‘inflammatory reaction’ likely creates a toxic environment for sperm (spermicidal), as well, likely inhibits implantation.