Ibogaine has been associated with QT prolongation and potentially serious arrhythmias. QT prolongation refers to a change on an electrocardiogram that can increase vulnerability to a dangerous rhythm disturbance in some circumstances; the Long QT syndrome reference explains why this electrical interval receives clinical attention.
Published case reports and safety discussions have described serious outcomes in connection with ibogaine exposure, particularly where cardiac disease, electrolyte imbalance, concurrent substances, or medicines may have been present. That does not establish a safe pathway for any individual. It underscores why a cardiac history, medication review, and appropriate clinical monitoring are medical questions—not details to improvise.
Alcohol-related dehydration, poor nutrition, vomiting, liver disease, and metabolic disruption can complicate the picture further. A normal-feeling moment does not rule out risk. People with a history of fainting, palpitations, heart disease, or known rhythm abnormalities should treat this as a reason for direct medical consultation.
Plain-language takeaway: a substance associated with rhythm risk should not be approached casually, especially where alcohol use, medical illness, medicines, or uncertain withdrawal status are involved.