This is an emergency contraceptive medication intended to prevent pregnancy caused by an unprotected act of intercourse.

IUPAC name: (8S,11R,13S,14S,17R)-17-acetyl-11-[4-(dimethylamino)phenyl]-17-hydroxy-13-methyl-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-3-one

Drug class: Selective Progesterone Receptor Modulator

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Route of administration: Oral (Tablet form)

Is it a drug that needs a prescription? YES

Is it an OTC drug? YES

Mechanism of action

It is a postcoital contraceptive drug that works by preventing or prolonging the release of the egg from the ovaries. It also might function by changing the uterine lining to inhibit conception. It is most effective when taken within 5 days of intercourse.

Side effects

Side effects of ulipristal may include nausea, fatigue, dizziness, painful menstruation, abdominal pain, spotting, headache, swelling of face/throat/lips, rashes/itching/hives.


Before taking this drug, tell your doctor:

If you are allergic to it or to other progestins (including medroxyprogesterone, norethindrone) or if you have other allergies.

If you are taking any other medications (prescribed, non-prescribed, or herbal products),

If you have a medical history unusual vaginal bleeding.

Limit alcohol consumption as it makes you more drowsy, loss of alertness may occur.

Use of this medication is not recommended during pregnancy.

If you get pregnant or think you may be pregnant, consult your doctor.

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