I have never tried Red Bull,Amp,Monster ect...I have alway's done one coffee a day even on the all nighters & the back 2 back fishing before work.
But I broke down and tried one of these power drinks it's called 6 hour power by Stacker II.It's a 2.OZ.bottle the Vitamin B12 it 8,333% & B6 is 2,000% WhooAhhh!this Chit works

My Ass wasn't dragging @ all,nice even energy it wasn't the hair standing on end type,just hit the ground running.
5/0