성적건강에 관련된 의학적 지식을 담고 있다. 이 문서는 사회통념으로 볼 때 19세미만에게 적합하지 않은 내용이므로 성인만 보길 권한다. 문서를 보는 건 당신의 선택이지만, 당신에게 당황, 걱정, 죄책감 등의 정서적 충격을 줄 수 있다.
성관계 후 5일 이내 (120시간) 까지 복용할 수 있는 사후 피임약이다. 프랑스 HRA Pharma 에서 제조한다.
울리프리스탈 아세테이트 (Ulipristal acetate 30mg; UPA) 성분으로 낙태약인 RU-486과 유사하여 프로게스테론 수용체를 변화시켜 임신초기에 필수적인 프로게스테론 홀몬의 작용을 억제한다. 난소에서 난포의 성장을 지연시키고, 난자의 배출을 억제하고, 자궁내막을 변화시켜 수정란이 착상되지 못하도록 막아주는 역할을 한다.
기존의 응급피임약인 레보노르게스트렐(Levonorgestrel)보다 복용 가능한 기간과 피임 효과 면에서 더 우수하다.
Very importantly, if you need to you can take EllaOne up to five days after unprotected sex. It would be fair to say that EllaOne is so new that not a lot is known about its mode of action, or possible long-term effects. Experts state that it acts by blocking the receptors onto which your female hormone progesterone would normally bind. The manufacturers say that it 'is thought to work by stopping your ovaries from releasing an egg'. They also state that 'it may also alter the environment in the womb'. Although EllaOne definitely works, at present there's no overwhelming evidence that it works better than the traditional post-coital pill (Levonelle). So, unless you're too late to use Levonelle (for instance, if three days have already elapsed since you had sex), your doctor may see no point in giving you this new brand, especially as it's rather more expensive. If you do use EllaOne, please first read the patient information leaflet that comes with it. It will be updated as more information becomes available about the drug and its side-effects. And the most common unwanted effects of EllaOne are:
But all of these occur in less than 10 per cent of women. The makers state that 75 per cent of EllaOne users have their next period more or less on time, but 7 per cent experience it a little early, and 18 per cent find that it is delayed.
EllaOne's effect can be reduced by various medications, including the popular remedy St John's wort. Please note that the effectiveness of oral contraceptives may be reduced by EllaOne. So if you happen to be on the Pill or the Mini-Pill, in my view you should use condoms till your next period arrives. Or else, don't have sex. If you happened to throw up within THREE hours of taking EllaOne, you would need another dose. Important note: it's recently become clear that EllaOne shouldn't be used by women who have uncontrolled severe asthma.