"works perfectly. i actually read reviews about plan b from this website before i purchased. i took it a couple days after sexual intercourse and got my period the following week. i&#039;m 19 if that helps and i have an extremely irregular period. i had side effects like fatigue and lower back pain and my stomach felt strange and different but nothing too severe. all is well now. if you&#039;re thinking about buying it think no more. $50 is nothing compared to a kid in my opinion.lol. i recommend it 100%."