This seems to pop up a lot. After reading about this the first time I researched for about a month before purchasing any. My general experience with them is th

This seems to pop up a lot. After reading about this the first time I researched for about a month before purchasing any. My general experience with them is that they work, they keep you up longer than you would normally be able to, they keep you alert, you don't feel like you are hopped up either. The effect only lasts so long though, after being up for over 24 hours, your body gets tired, and the effectiveness of the drug gets worse. I didn't really go past 36 hours, but if I wanted to I could have. Note that I didn't purposely try and stay up all those times, I work graveyard shifts and ended up having important things come up when I needed to sleep and I was forced to stay up. Modafinil really did help me when I was tired, but as far as being a 'smart drug' it wasn't exactly mind blowing. It did make it easier to focus, but I could just as easily focus on a TV show, or a website, versus a piece of code I wanted to finish. So if you need to stay up, study, or get something done and you are determined to do it, this is great. If you want something to augment your day to day life and make you 'smarter' this really isn't for you. Though there are more things popping up saying that it might have worse long term side effects than previously thought, I didn't really have any that I know of, but if I get brain cancer in a year I guess I know why. :)