Certain antipsychotic medications, including quetiapine and ziprasidone, carry their own QT-prolongation risk. Combined with trazodone's own documented QT effect, particularly at higher doses of either drug, the cardiac rhythm risk can be higher than either medication alone would suggest. This combination is sometimes clinically necessary but should involve ECG monitoring discussions with the prescribing team.
Trazodone and QT-prolonging antipsychotic medications
Some antipsychotics also prolong the QT interval, and combining two QT-prolonging medications raises the risk beyond either alone.
Editorially reviewed
Key points
- Both trazodone and some antipsychotics can prolong QT independently
- Combined risk can exceed either medication alone
- ECG monitoring may be appropriate for this combination
Seek urgent care if you notice:
- Palpitations with dizziness or fainting
Not medical advice. Always tell your prescriber and pharmacist about every medication, supplement, and substance you use so they can check for interactions specific to your situation.