IIRC something similar happened with MDMA.
Hopefully folks like myself who have used Kratom to alleviate opiate withdrawal to great success will come forward and comment.
Anecdotally speaking, there are folks who have used kratom to ween themselves off of maintenance drugs like methadone and suboxone.
The withdrawals from long-acting maintenance opiates like these can last months making it nearly impossible to get off of them cold-turkey.
Switching to kratom, which has a shorter, more forgiving withdrawal, can be of great benefit to an addict looking to get off of these maintenance drugs.
For an addict, kratom stops withdrawals in their tracks. It doesn't get you high, and taking more to get high would be pointless.
To an opiate-naive individual kratom will at most give a mild buzz. It's not like taking heroin, hydrocodone, or even codeine. just a mild buzz.
Kratom is usually sold as a powdered leaf. You can't overdose on kratom, because if you take too much of the powdered leaf you just throw up, well before you're able to ingest a dangerous amount. It's very self-regulating in that way.
You can't smoke or snort the powdered leaf. It is usually swallowed as a powdered leaf with a thick juice or simply brewed into a tea.