What is known
Adverse-event evidence is important, and incomplete.
Observational series and case reports have documented severe outcomes in association with ibogaine exposure, including rhythm disturbance, sudden death, seizures, psychiatric complications, and toxicity in settings where other substances or medical conditions may also have been present. These reports support caution, but they are not a denominator: they do not tell us how often every event occurs among all people exposed.
Absence of a reliable surveillance system is not evidence that a serious event is rare.
Published accounts also vary in screening, setting, co-exposures, follow-up, and how adverse events are defined. That variation makes comparison difficult and leaves meaningful gaps in surveillance. The clinical meaning of long QT syndromes helps explain why a change on an ECG is not a trivial finding when evaluating compounds with known electrophysiologic effects.
For a broader overview of current uncertainty, potential uses, and cautions, ibogaine neuroregeneration information may be useful alongside primary literature and formal regulatory sources. Tembara’s evidence review framework also separates early signals from conclusions that the available research cannot yet support.