Ibogaine has been associated in published case reports and reviews with QT prolongation and potentially dangerous disturbances in heart rhythm. QT prolongation matters because it can be associated with torsades de pointes, a potentially life-threatening arrhythmia; the Long QT syndrome overview explains why delayed cardiac repolarization receives close attention in drug-safety assessment.
The U.S. Food and Drug Administration has stated that ibogaine is not approved for treatment of substance use disorder and has warned about serious adverse events, including cardiac risks. Its consumer warning on ibogaine is a useful reference point for the difference between public interest and established safety.
Mechanistic explanations and reported outcomes do not establish a simple risk threshold. A person’s cardiac history, medications, electrolyte status, dose, co-occurring substance use, and the setting may all matter, while available evidence remains incomplete. Kavora’s broader ibogaine research and policy overview keeps those questions separate from claims of benefit.