Finally fell asleep at about 20 or 21 hours. I think most of the time after the initial 18 hours was my own stubbornness to stay awake, and less the work of the drink, but still. I give it a lifespan of about 18 hours, with adverse side effects only for the first 4 or 5 hours.
(and how were the dreams) :V
...actually, I think the dreams were Touhou-related. I don't really remember very well, but I'm pretty sure one of them had something to do with Mokou and Kaguya.
One funny thing to note is that I actually still have not finished this paper that I made this for in the first place. So now I need to hurry up and figure out how to finish it before 2 PM.