add some alcar into that drink plus the caffene tabs are great.

For me, L-Tyrosine enhances the effects of caffeine. It's pretty cheap at BulkNut, and it definately gives me a good kick in the ass and mental focus to slam the logbook.

I agree, L tyrosine wont make u shaky/groggy or make u act like u r on ICE, but it definitly works.