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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]
Intrauterine devices are usually used as a primary contraception method, but sometimes used as emergency contraception. The copper-T intrauterine device (IUD) can be used up to 5 days after unprotected intercourse to prevent pregnancy. Insertion of an IUD is more effective than use of Emergency Contraceptive Pills - pregnancy rates when used as emergency contraception are the same as with normal IUD use. IUDs may be left in place following the subsequent menstruation to provide ongoing contraception (3-10 years depending upon type).[1]