Yes, Ibogaine is literally 10x more effective than Methadone. It's risky if you've weakened your heart with stimulants though.
Source?
The "science" on treating Opioid addictions at this point would just be reaffirming what we already know with mountains of "anecdotal" evidence. You want to solve the Opoid problem? Legalize Ibogane, DMT, Psilocybin, and MDMA, it is that simple.