I support Kratom as a maintenance drug if it works.
@JackARoe mentioned stability and that's the biggest flaw I see with using something like Kratom. In perfect conditions, I would have more confidence. We're not scientists in a lab, we are people with addictions. It is an extremely delicate procedure using these substances without losing control. First, Kratom is not standardized. Second, it's a powder. If someone is taking Opioids using a measuring spoon, even the minute differences from one scoop to another can play tricks on a person's mind. Maybe they don't feel good enough, maybe they think maybe that last spoonful wasn't quite a full spoonful, oh well, I took 8 spoonfuls, how big of a deal could a ninth spoonful be?
These are just examples. I think a lot of people reading this can probably relate to what I'm describing though. If a person is going to maintain this delicate balance for weeks, months, years, decades??? Being even a little bit off in one's approach is going to lead to going off the furrow given enough time. This is why I think you have to be using something that has a determined strength in preset dosage units. Kratom might even be superior to Methadone and/or Buprenorphine, I'm not sure. Because they are available and standardized, at least in the United States, this is the best you can hope for and live a truly stable life.
Comparing Buprenorphine and Methadone, they don't compare well side by side. Still, essentially Buprenorphine is weaker i.e. more appropriate for folks with smaller habits while Methadone is more powerful and thus better suited to people with larger habits.
To explain, I feel Buprenorphine was at its highest level of relevance during the Oxycontin days and somewhat less so during the Heroin days. People who were using ~240mg Oxycodone or maybe a gram of street Heroin per day could still have success with Buprenorphine. As Oxycodone and prescription Opioids died out, I saw less people getting benefit from Buprenorphine and more requiring Methadone. In the days of Fentanyl, Buprenorphine is pretty much useless except for folks in situations like yours
@pnillyg
All of that being said, my advice is to try Buprenorphine first, see how you feel and if it's not enough, you can try Methadone.