I been turned on to ghb for a but year helps me get good sleep. Just ran out about a week ago in that time frame also did some meth few days in a row first day hit me nicely 4th day didn't get much out of it I assumed my dopamine was depleted tried 2 days later still nothing. Realized about the time It stopped hitting me was about the time I stopped using g to sleep wonder if that could be a contributing factor to the change in effect. Remember many years ago doing opiates everyday when I did blow I got crazy unpleasant anxiety unless I did opiates before hand wonder if something similar could be happening. Not a long term or frequent method user.