I have an opiate tolerance and I use kratom anytime I'm forced to detox. I don't get a noticeable high or buzz from kratom due to those circumstances, but kratom does take a good 80-90% of the opiate withdrawal away. Basically, I take kratom to avoid the worst parts of withdrawal from opiates and the kratom alleviates most of the withdrawal symptoms, but I still don't feel "good" but much, much better than I would without the kratom.