Yeah, good point about prolonging the withdrawal. Personally I didn't yet have the fun to withdraw from kratom, long thought it to be a herbal tramadol but was blown away by its potency, and switching to it was like methadone -> morphine, another layer of clarity added, felt like I didn't think to be possible for a long time.. what worries me most are
reports of late onset liver toxicity (think it's about poor quality stuff, like heavy metals and herbizids etc.. unfortunately you can't just go testing for this stuff of shit).
Still, kratom / mitragynine is only a partial agonist at mu, similar to but with much less(?) affinity than buprenorphine. In animals it doesn't even cause dependency at all (but the metabolite/prodrug 7-HO mitragynine does, this one is what makes red vein different and resembles more a traditional opioid) ... I don't know if it's known why bupre precipitates withdrawal but kratom, being
more stimulating, does not. Remember that kratom contains around 40 active compounds, some of them are even antagonists at mu!
I was into day 3 or 4 of morphine w/d, the worst about adrenergic activation, with kratom at ease yet got HUGE pupils and tachycardia which made somebody close to me to overly worry, fuck here a beta blocker'd be just the road down but no not without doctor etc..pp.. what I wanna say is, kratom definitely takes withdrawal away, I even felt euphoric but with higher or longer habits you might need an additional anti-adrenergic drug. My feeling was that kratom and pregabalin don't like each other but the former substitutes for the latter, minus said adrenergic thing.
Might be an approach to combine kratom and
burst ketamine doses to lower tolerance. Completely at your own risks, I wouldn't expect too many of them but monitor your blood pressure.
Also read that sub-flood doses of iboga(ine) might be enough to substantially lower opioid tolerance too. This one feels more dangerous and less pleasurable though.
In past I achieved the same with supratherapeutic doses of memantine. This compound additionally substitutes for the lacking dopamine which, next to the adrenergic over-activation, makes withdrawal so fucking unpleasant. With wreckless near-dissociative doses tolerance to morphine went down to almost zero within a few days, and I didn't feel much....besides mania. This comes from too much dopamine and is hard to spot, K is certainly much safer..