this is a generic version of the name brand pill, same medicine but much more affordable.don't be discouraged by the bad reviews, here are the facts:1) box open - the box is not sealed. the pill , however, is sealed very well in a card2) i got pregnant - congratulations! you should have read the package. this pill does not prevent pregnancy, it "reduces the chance of pregnancy" just like the name brand3) i got more side effects - go ahead and do a double blind test then, brand vs this generic, and then find out if your hypothesis is trueif you want the technical data, plan B used to say it reduces the chance of pregnancy by 86%, which is to say, 1 in 7 woman who would have gotten pregnant without this pill will still get prego with the pill. if taken within 72 hours. keep in mind how many pills have been sold here. now if you take this pill right after intercourse, your chance of pregnancy is reduced by around 95%, same as taking the daily pill. you will get side effects, though, from these emergency contraceptives, especially if you are not used to this pill or the daily pill.