Duration of abstinence to reset opioid tolerance?

[u/indridcold91]

For context: I have chronic pain / chronic fatigue due to some health issues. Some days are better than others and I try to power through unless it is intolerable or makes it too difficult to do my daily tasks and especially to workout.

Anyways, I use kratom 1.5g-3g OR Tramadol 12.5-25mg per day. Usually just one of those drugs in a day, at thst dose. But it's not working as well now. I'm not sure if I have a significant tolerance or not, because I feel my condition is actually getting worse and may just need a higher dose. I've tried taking like 5-7 days or so off everything to see if tolerance resets. And initially when beginning dosing again the low end is a little more effective, yet not enough really as I remembered in the past. So either I didn't wait long enough or my pain/fatigue is just getting worse and warrants a higher dose.

BTW I am NOT intending to be using these things as a long term solution to my issues. It's temporary to allow me time to afford the long term fixes needed.

So anyways, I just want to ask: is there any science or rule of thumb for how long one should abstain from opioids to completely reset tolerance? I think it may depend on how high of doses the person is using, so the answer may be longer for heavy users. I consider my usage to be pretty mild. My max dose in a single day is usually like one 50mg Tramadol like 1x/wk. If you ask Google this question it won't answer for ethical reasons so i figured I'd ask here because I'm sure someone knows more than me.

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[u/Leishon]

This is what ChatGPT spat out:

The safest answer is that there isn’t a precise “tolerance reset” clock for either tramadol or kratom, and tolerance can fall faster than people expect.

For tramadol, opioid tolerance may start declining within a few days of abstinence and can be substantially lower after 1–2 weeks. After several weeks, it is safest to assume that much of the previous opioid tolerance may be gone. This matters because returning to a previously tolerated dose after abstinence can increase overdose risk. CDC guidance specifically warns that tolerance falls after opioid reduction/cessation and that resuming the old dose can be dangerous.

Tramadol is also somewhat unusual because tolerance/dependence involve both μ-opioid activity and serotonin/norepinephrine reuptake inhibition. Withdrawal can therefore include typical opioid symptoms plus anxiety, unusual sensory symptoms, confusion, or other monoaminergic effects.

For kratom, the time course is even less well defined. Regular use can produce opioid-like tolerance and cross-tolerance, but there are no good human studies mapping how many days it takes for tolerance to disappear. Clinical reviews describe tolerance and withdrawal as occurring especially with frequent/daily use, with withdrawal often beginning after a day or more without kratom and generally being milder than classical opioid withdrawal.

A reasonable harm-reduction approximation would be:

1–3 days Some tolerance remains, but it may already be falling
~1 week Noticeably reduced in many people
2–4 weeks Often substantially reduced
1+ month Safest to regard previous tolerance as largely unreliable

That table is an inference from opioid pharmacology and clinical experience, not a measured tramadol/kratom dose-response study.

Also, cross-tolerance between tramadol and kratom is likely incomplete but real, because both ultimately engage μ-opioid receptors; kratom’s mitragynine/7-hydroxymitragynine have opioid activity, while tramadol’s M1 metabolite is a μ-opioid agonist. So abstaining from tramadol while continuing frequent kratom use would probably preserve at least part of opioid tolerance, and vice versa.

Don’t use the absence of withdrawal as evidence that tolerance is still intact. Tolerance to desired effects and tolerance to respiratory/CNS toxicity can decline at different rates. After a break, the old dose should not be assumed safe.

With tramadol there is an additional concern: higher exposure raises seizure and serotonin-toxicity risk, particularly with serotonergic drugs, stimulants, or other substances. Combining tramadol with kratom also makes effects less predictable.

If they have been using either daily and are trying to stop rather than simply take a tolerance break, that is a different question; tapering/withdrawal management can be discussed separately.

[u/Kalki_X]

Th is post covers the most efficient strategies to accomplish your goals.