@mvie_20 Yes it does.. it really does. If that is too hard of a hit, try,, GREEN TEA with ginseng. That has a more suddle build up effect. You don't get the sudden purge like Red Bull drinks, you get a stamina, and awake feeling.. But still you can sleep through it. Also, it builds up, so you gradually start to be more active, stronger and last longer(and look younger and smarter too).