About ulipristal acetate
Selective progesterone receptor modulator
Used for
- Emergency contraception after unprotected sex or contraceptive failure
Usual adult dose
Take 30 mg once, as soon as possible and within 120 hours after sex.
Common side effects
- Headache
- Nausea or abdominal pain
- Menstrual changes
- Dizziness or tiredness
Important warnings
- Does not end an established pregnancy or protect against sexually transmitted infections.
- Hormonal contraception may work less well; wait five days before restarting and use condoms meanwhile.
- Medicines that increase liver enzymes can reduce effectiveness.
- Seek medical assessment if the next period is over seven days late.
Pregnancy
Not for use during pregnancy; it does not terminate an established pregnancy.
Breastfeeding
Avoid breastfeeding for one week after taking it; express and discard milk during this period.
Interactions
- Progestin-containing contraception may reduce effectiveness.
- Enzyme-inducing medicines, including rifampicin and some seizure medicines, may reduce effectiveness.
- St John’s wort may reduce effectiveness.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.