The emergency pill must be taken within 72 hours after unprotected sex. The sooner it is taken, the more effective it is. It is most effective when taken within 12 hours after unprotected sex.
Yes, but it not recommended. Repeated administration within a menstrual cycle is not advisable because of the possibility of disturbance of the cycle.
No. The emergency pill contains either a combination of oestrogen and progestin or progestin alone, and works by delaying or inhibiting ovulation. It is not a method of abortion.
No. Emergency pills do not work if a woman is already pregnant.
No. Good evidence shows that emergency pills will not cause birth defects and will not otherwise harm the foetus if a woman is already pregnant when she takes the emergency pill.
Women who take the emergency pill should understand that they could become pregnant the next time they have sex unless they begin to use another method of contraception at once. Because emergency pills delay ovulation in some women, she may be most fertile soon after taking it. If she wants continuous protection from pregnancy, she must start using another contraceptive method at once.
No. Nearly all other contraceptive methods are more effective in preventing pregnancy. A woman who uses the emergency pill regularly for contraception is more likely to have an unintended pregnancy than a woman who uses another contraceptive regularly. Having said that, women using other methods of contraception should ideally know about the emergency pill and how to obtain them if needed.
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Accessed on September 6, 2016