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QT prolongation and arrhythmia
Ibogaine has been associated with QT interval prolongation, a change in cardiac electrical timing that can increase susceptibility to dangerous arrhythmias. The U.S. Food and Drug Administration describes QT prolongation as a safety concern because it can be linked to torsades de pointes, a potentially life-threatening abnormal rhythm.
That concern is materially different from the acute experiential intensity often discussed around DMT. It is one reason claims about an ibogaine center in Mexico should be approached with attention to independent medical safeguards, not marketing language alone.