I do not know about the interaction of harmalas with morphine, but I, being a recovering opioid addict, can say that DMT, especially 5-Meo-DMT helped exponentially in concert with a proper ween. My weening method has gotten me off with little consequence multiple times. My process is as such:
-Begin by reducing your dose by 25%, make this reduction every week. This will not be the most comfortable when you start getting to super low doses, but is very function-able.
-When you get down to your threshold dose, switch to Suboxone or Methadone, but not for long. You shouldn't be on either of these for longer than a few weeks, as they can be counterproductive, but are necessary due to their long-winded effects. Every 3 days, cut the dose in half, until you are taking .25mg of suboxone, or 1mg or morphine (morphine can take a bit longer, and I recommend that if you are having issues, that you decrease by 1mg a day). At this point, try abstaining for 36 hours, then 48. Continue extending your abstinence periods. In my experience, once you get to abstaining for 72-96 hours, you will be able to function normally without any of the crazy withdrawals. Of course, using plant medicines containing DMT or other tryptamines can also help this. I am also sure that using Kratom or Akuamma in a similar fashion could achieve the same results ad Sub or Methadone, but I did not discover the effectiveness of these particular plants until after I was off the opioids.
I hope someone is able to answer your question about the harmalas. I wish you the best of luck, friend. This journey is not an easy one, but if you follow the weening process, I am certain you will have the tools you need to have success.
May we continue to be blessed