ellaOne is a method of emergency contraception whose purpose is to prevent pregnancy after unprotected sex has taken place or regular birth control has failed. Also known as the ‘morning after pill’, ellaOne is effective for up to five days following an episode of unsafe sex and can stop pregnancy even if you are due to ovulate. As such ellaOne has been shown to prevent more pregnancies than any other form of emergency contraceptive in the UK.
EllaOne should be taken as soon as possible after unprotected sex to maximise its effectiveness. However, ellaOne has a longer window of use than Levonelle. EllaOne has to be taken within five days (120 hours) of unprotected sex – allowing 48 hours extra than Levonelle.
EllaOne is taken as a single tablet. Whereas the effectiveness of Levonelle starts to decrease after 12 hours, EllaOne is thought to remain up to 95% effective throughout the five day window.