ellaOne is an oral emergency contraceptive pill (a.k.a. morning after pill) containing ulipristal acetate. If you have had unprotected sex, or your contraception has failed, taking ellaOne can help prevent unplanned pregnancy.
No other morning after pill is more effective than ellaOne, and it can be effective for up to 5 days (120 hours) after unprotected sex. However, like all morning after pills, it is more effective the sooner you take it.
For more information about ellaOne, check out All you need to know about ellaOne.