that sucks. I won't happen to me though.   
However, I did take probably 90 percs in 3 weeks when I was home.  The last week I was taking them, they weren't doing jack shit.  I would take 2 normally previously and they would knock me the the fuck out.  Taking that many I knew I built a tolerance to them.    
When I run out.  I run out.  Maybe I'll start selling my wife on the forum here for some drugs. .