Ya know, taking emergency contraception is not 100% effective, so even if your friend were to take it, she could still get pregnant. Emergency contraception is not cheap either, so she may be throwing her money away too.
The thing about emergency contraception is that the brand on the market right now is new, and there has been VERY little testing on it. In fact, there has not been any testing on how taking all these chemical hormones can effect your body in the long run. Emergency contraception is a whole bunch of chemical hormones taken in a short period of time. It can be hard on your health, and there has not been adequate research to see how this affects women.
Remember, there is only a small window of time each month when you can get pregnant and if your friend did not have sex at this time, there is no need for her to take and because she cannot get pregnant anyway. Why waste the money and pump your body full of chemical hormones if you don’t have to? It is not worth it.
Your friend should probably just wait about 7 to 10 days and take a pregnancy test. Here is a link to a website that can run a free and confidential pregnancy test. http://www.optionline.org/advantage.asp or you can call 1-800-395-HELP. At the website all you have to do is type in your zip code and a list of centers will appear. Just call the center and tell them that you need a free pregnancy test run. They will be happy to help you.