When I moved to University in Canada I was introduced to "Wake Ups" caffeine pills.

I am not a coffee drinker, but I liked to stay up late, and I had to go to class, so I decided to try these out, since at that age you feel like you are invulnerable.

These symptoms seem pretty consistent with some that I felt in extreme cases. I stopped taking them after a few attempts.

The positives of Caffeine were great though. I felt "on" like never before. Sharp, quick-witted, alert. I appreciate why some find it difficult to quit. Is there anything else that has a similar effect minus the downsides?