Welcome to the Emergency Contraception World Wide Web server operated by the Office of Population Research at Princeton University and funded through generous foundation support. This server is designed to provide accurate information about emergency contraception derived from the medical literature and a directory of clinicians willing to provide emergency contraceptives in your area. All forms of emergency contraception described on this server require a prescription. Do not attempt to use them except under the supervision of a licensed clinician authorized to prescribe. This server has no connection whatsoever with any companies that manufacture or sell emergency contraceptives.
Emergency contraceptives are methods of preventing pregnancy after unprotected sexual intercourse.
They do not protect against sexually transmitted infections. Emergency contraception can be used when a condom breaks, after a sexual assault, or any time unprotected sexual intercourse occurs. Do not use emergency contraceptives as your only protection against pregnancy if you are sexually active or planning to be, because they are not as effective as any ongoing contraceptive method. We maintain a directory of providers who have informed our office that they are willing to provide information about and prescribe emergency contraceptives. We also have answers to frequently asked questions about emergency contraception, including instructions on how to use combined as well as progestin only emergency contraception.