Ibogaine is an indole alkaloid. It occurs naturally in a number of dogbane plants, among them above all in Tabernanthe iboga. Proponents of ibogaine treatment for drug addiction have established formal and informal clinics in Canada, Mexico, the Caribbean, Costa Rica, the Czech Republic, France, Slovenia, the Netherlands, South Africa and the United Kingdom where ibogaine is administered as an experimental drug. Although the full nature of Ibogaine is still emerging, it appears that the most effective treatment paradigm involves visionary doses of ibogaine of 10 to 20 mg/kg, producing an interruption of opiate withdrawal and craving, followed by intensive counseling and therapy during the interruption period.