Can anyone answer why ibogaine is not available to cure methadone and heroin addiction instantly by resetting the body?

Not that simple. Ibogaine is available in multiple clinics in mexico for dealing with addiction. Caution is advised. It is not an automatic cure, and there are dangers like sudden cardiac death and autonomic dysfunction. http://www.ncbi.nlm.nih.gov/pubmed/16698188 more needs to be looked at if this is to be used on larger scale, even though some have found benefit in both opiate and Cocaine addiction.