Yea, my tolerance is pretty high, due to my pains I've been prescribed opiates since I was about 15 years old. Started with just regular ol' perc 5's. There was a point where two of those would have me feeling great. Then over time, they just wouldnt affect me anymore, so my docs kept raising doses and experimenting, and this continued for years until they put me on the combo of OP 80's and Blue 30's. Its to the point now where a perc 5 , offers me zero relief.