See our QT prolongation side-effect page for detail. This is one of the more clinically important things to discuss before starting trazodone if you have any personal or family history of arrhythmia, unexplained fainting, or long QT syndrome.
Does trazodone affect heart rhythm?
Short answer: It can affect the QT interval, particularly at higher doses or combined with other QT-affecting drugs. Mention any personal or family heart rhythm history before starting.
Editorially reviewed
Not medical advice. This answer is general and educational. Your prescriber knows your full history and can give guidance specific to you.