Yeah, but combination of ingridents might affect it. "Monster Energy" does nothing for me. I can drink it and go to sleep. Mountain Dew will keep me more alert than it, Coffee keeps me more alert than Mountain Dew, and "Gridlock" energy drink from Aldi (knockoff of Monster Energy) is almost as good as Coffee. Different people react differently. If I need to stay up at night, only Coffee or Gridlock will do the trick.