I'm addicted to Dr. Pepper :c, 2 cans a day.
But I have an obscenely high natural blood-sugar level and if it drops to the kind of level a normal person would have I'm a complete downer, so it all works out :L.
Funfact; I drink Red Bull or any other energy drink to calm me down, a large can of Red Bull will make me calmer than any person taking drugs :D