<p>i need to stay concentrated but red bull has no effect should i double up or try another drink anyone suggestions</p>
<p>coffee or any other drink with caffeine</p>
<p>Monster energy drink is the best!</p>
<p>^Yea, Monster is the best. :)</p>
<p>how much is it</p>
<p>what about just COKE?!.. that's works also!..</p>
<p>red bull doesn't work for me either... and I think it tastes nasty.
try coffee or diet coke or something.</p>
<p>try monster</p>