The first time I did it recreationally was about 4 months ago where I took 8 75mg (600mg) and felt absolutely fantastic, however on other occasions to get the same effect I literally doubled the dose (1600mg) to get the buzz I had previously. What's up with the tolerance issue? Can anyone shed any light on this? The story is I have been upped my dose on the stuff and now I get the 150mg capsules and the other week I ended up taking over 4g of the damn stuff!!!! Though I must stress I DID NOT enjoy the effect, I became jittery and having uncontrollable muscle twitches and jerks and really frightened me, besides that 1 off occasion the next day I took 900mg during the day and NO EFFECT!!! Now I am guessing I need a break, just how long though would I be able to reach a decent effect from as little as 600mg again? I don't know if they potentiate other drugs like Zopliclone or Diazepam which I have on my possession. From reading up on here it takes at least a week to reverse tolerance is this true but in my case maybe longer, advice greatly appreciated.!!!!!