Used to take 70mg of Ritalin a day in high school and started self medicating adderall for work purposes and the adderall works way better, I feel way less anxious and more focused but It seems to last forever. First time I tried it two months ago, took it at 6am and ended up getting blackout drunk at 10pm to finally fall asleep, another time snorted 20mg and took me over 12 hours to sleep. Today I took 20mg at 630 am it's currently 8pm and I still feel kinda wired. Even if I took like 50mg of Ritalin ir at lunch time I wouldn't have a problem going to sleep. But this stuff seems to last as long as fucking meth. I'd usually be asleep right now and after taking adderall 13 hours ago I can still tell I'm wide eyed. Does anyone else seem to get this effect?