Risk begins with the heart
Ibogaine has been associated with QT prolongation, a change in cardiac electrical timing that can increase vulnerability to dangerous rhythm disturbances. The long QT syndrome reference describes why prolonged repolarization can be clinically significant, especially where other risk factors are present.
Published concerns include ventricular arrhythmias and broader neurocardiac interactions. These issues are not a minor qualification: they are central to understanding ibogaine effects. Reports of mortality have been discussed in the literature, while causation in individual cases can be difficult to separate from health history, co-occurring substance use, medications, dose uncertainty, and the setting involved.
For broader context on possible effects alongside their limits, the overview of ibogaine effects places safety questions beside the uncertain evidence often encountered by patients, families, researchers, and policy-minded community members.
Potential benefit claims do not cancel physiological risk, and uncertainty is not evidence of safety.