"18-MC [18-methoxycoronaridine], a novel iboga alkaloid congener, reduces intravenous methamphetamine and nicotine self-administration in rats. These and previous results with morphine, cocaine and alcohol indicate that 18-MC warrants further development as a potential treatment for multiple forms of drug addiction."

Source

Glick, S.D., Maisonneuve, I.M., and Dickinson, H.A., "18-MC Reduces Methamphetamine and Nicotine Self-Administration in Rats," Neuropharmacology, Vol. 11, No. 9, June 26, 2000, p. 2015.