"Despite its attractive properties, ibogaine is not approved as an addiction treatment because of the induction of side effects such as hallucinations. In addition, ibogaine at high doses causes degeneration of cerebellar Purkinje cells (O'Hearn and Molliver, 1993, 1997) and whole-body tremors and ataxia (Glick et al., 1992; O'Hearn and Molliver, 1993) in rats."
Dao-Yao He, Nancy N.H. McGough, Ajay Ravindranathan, Jerome Jeanblanc, Marian L. Logrip, Khanhky Phamluong, Patricia H. Janak, and Dorit Ron, "Glial Cell Line-Derived Neurotrophic Factor Mediates the Desirable Actions of the Anti-Addiction Drug Ibogaine against Alcohol Consumption," The Journal of Neuroscience, Vol. 25, No. 3, Jan. 19, 2005, p. 619.