specialspack
Bluelighter
even w/o any chemicals, 3-4 sleepless 24hr periods will fuck you up. During my time in the service, my fellow servicemembers and I would embark on 3 day maintenance "binges." Staying awake for up to 72 hours with NO chemical assistance left me with many of the same symptoms you describe above. Perhaps it isn't the chemical so much as the sleep dep.
Indeed, I don't think people realise this enough. Sleep deprivation can be a physical and mental bitch.