Do not take these! The amount of chemicals that are in this is utterly horrifying. Don't do that to your body. Just get a good night's rest, eat a whole bunch of fruit for breakfast or even throughout the day (natural sugars from just one apple have been proven to give as much or even more energy than a cup of coffee), and you'll be fine. This stuff is so bad for you. Just live a healthy lifestyle and you won't need this crap.