My concentration has improved greatly after having given up on caffeine.
I used to get headaches around 1pm from not caffeinating myself first thing in the morning. I dont anymore.
My brain functions much better "au naturel"...without chemical enhancers.
Once in a while I'll have a coffee in the morning because I need to JOLT myself awake after a bad night's sleep. But when I get a good night's sleep, I find that I don't need coffee. And my brain wakes up bright and clear to the morning sun.
Caffiene pills are nasty for you. You might as well start doing speed if you're going to ingest powder. Coffee is probably the best source for caffiene out there. All natural :)
Nothing wrong with coffee. But, far more expensive and some people don't like it......and once again you simply are not educated if you equate caffeine pills to speed(especially if you decide to drink coffee). Coffee has all the same POSSIBLE side effects as caffeine pills
But, hey if you want to spend an extra 500 dollars a year cause its "natural" then more power to you