Emergency contraception

Request an online visit for Emergency contraception. A licensed provider reviews your case and prescribes treatment when appropriate.

Medically reviewed by Dr. Ikechukwu Ogbu, MD
MD · Board-Certified, Internal Medicine · Last reviewed June 2026

About Emergency contraception

Emergency contraception (EC) is used after unprotected sex or contraceptive failure to reduce pregnancy risk. Options include the copper IUD (most effective; can be placed up to 5 days after intercourse), ulipristal acetate 30 mg (effective up to 120 hours), and levonorgestrel 1.5 mg (most effective within 72 hours and less effective at higher body weight). EC works primarily by delaying or preventing ovulation; it is not an abortifacient and is ineffective once implantation has occurred. Ongoing contraception should be planned afterward.

Common questions

Reference only. Not a substitute for medical advice. Not appropriate for emergencies or controlled substances.