headdah
Bluelighter
when i was abusing n2o a while back, i started feeling like fatigue and tired all the time, started taking b12 tablets and was all good. yes i was sucking down multiple boxes of nos per night every night. got my craze undercontrol now only do it once in a blue moon 

Especially sober. But, it must be said, that nitrous on LSD is fucking sublime- like getting massaged by tentacles of time-stopping squids or something.