Ibogaine has been associated with QT prolongation, a change in cardiac electrical timing that can increase concern about dangerous arrhythmias. The FDA’s discussion of drug-induced QTc prolongation explains why this type of signal matters in medicine: changes in repolarization can be connected to serious rhythm risk in susceptible circumstances.
Published case reports and reviews have described arrhythmias and fatalities in connection with ibogaine exposure. Those reports do not make it possible to predict an individual outcome, but they do support a cautious reading of cardiac vulnerability, co-occurring conditions, medication use, dose uncertainty, and the setting in which an event occurs. For broader orientation on the subject and its metabolite, the ibogaine overview can be used as a starting point alongside primary literature and official sources.
People trying to understand the wider experience context can return to the Mindscape experience resource, but subjective accounts do not establish medical safety or reveal whether a person has an underlying risk factor.