Answers to Frequently Asked Questions About...
Safety
Is there a limit to the number of times I can use emergency contraceptive pills?
No. There are no safety concerns about using
emergency contraceptive
pills (also known as "morning
after pills" or "day after pills") more than once.
Emergency contraception is also effective for preventing pregnancy
after sex each time you use it. But if you are sexually active and
really want or need to keep from getting pregnant, relying only on
emergency contraceptive pills is not as effective
as using a birth control method before or during sex, like the pill
or condoms. (Find out more about the effectiveness of emergency contraception
here.) Emergency contraceptive
pills can also have unpleasant side
effects, such as making you sick to your stomach.
If you find yourself using emergency contraceptive pills a lot, it
might mean that you haven’t yet found a regular method of birth
control that works for you. In that case, talk to your health care
provider or check out what some of your other options might be here.
A thorough and up-to-date academic review of the medical and social
science literature on emergency contraception, including its safety
and effectiveness, is available
here 
.