Drug interactions
Lofexidine + Trazodone
Severity: Moderate
Lofexidine and Trazodone: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Lofexidine is an alpha-2 agonist that causes sedation, hypotension and bradycardia, and it prolongs the QT interval. Trazodone adds sedation, orthostatic hypotension and QT risk.
What this interaction means in plain words
Lofexidine and Trazodone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Lofexidine belongs to Central Nervous System; Trazodone belongs to Central Nervous System.
Why it happens
Additive CNS depression, hypotension and QT prolongation.
What to do
Monitor blood pressure, heart rate and sedation, and obtain an ECG if other QT risk factors are present; reduce doses if symptomatic.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Trazodone
- Arsenic trioxide + Trazodone Contraindicated
- Ibutilide + Trazodone Contraindicated
- Isocarboxazid + Trazodone Contraindicated
- Levoketoconazole + Trazodone Contraindicated
- Methylene blue + Trazodone Contraindicated
- Phenelzine + Trazodone Contraindicated
Other interactions of Lofexidine
- Adagrasib + Lofexidine Major
- Alfuzosin + Lofexidine Major
- Amiodarone + Lofexidine Major
- Amisulpride + Lofexidine Major
- Anagrelide + Lofexidine Major
- Apomorphine + Lofexidine Major
Frequently asked questions
Can I take Lofexidine with Trazodone?
MediHelp rates the interaction as moderate. Lofexidine and Trazodone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Lofexidine is an alpha-2 agonist that causes sedation, hypotension and bradycardia, and it prolongs the QT interval. Trazodone adds sedation, orthostatic hypotension and QT risk.
How serious is the interaction between Lofexidine and Trazodone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure, heart rate and sedation, and obtain an ECG if other QT risk factors are present; reduce doses if symptomatic.
What other medicines interact with Trazodone?
MediHelp also lists interactions of Trazodone with, for example, Arsenic trioxide, Ibutilide, Isocarboxazid. The full list is on the Trazodone page.
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