800mgs is way too much in a night. Even if you DON'T overdose, you'll be so uncomfortable and shitty feeling from that dose.
The most i've ever done was I believe 400 mgs, and by the end I felt so shitty and couldn't breathe right that I sold my gameboy to get heroin to come down. Otherwise, the comedown would of have been so bad I would of went crazy , not being able to breathe right, high heart rate and blood pressure , and bad bad bad paranoia feelings.
Ritalin can get really bad in high doses. Anything over 100-150 mgs is asking for trouble IMO.
-lenses