Hmmm this has been the subject of much debate. Some will say 5 days is enough others would say a few weeks. I find that about 2 weeks resets my opiate tolerance pretty much completely, but 1 week could prove equally beneficial. Like was said, it depends on frequency of use and dose. You say you need it for pain, which leads me to believe you can't just discontinue taking them...so tolerance is an unavoidable side effect for you. At least keep your dosage low, the more you take the faster your tolerance builds. If you keep it around 10-30mg you shouldn't see a rediculous increase in tolerance.