Drug interactions
Lofexidine + Sertraline
Severity: Moderate
Lofexidine and Sertraline: 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 prolongs the QT interval and can cause bradycardia and hypotension. Sertraline may add a small QT effect, so the arrhythmia risk is increased in patients with other risk factors.
What this interaction means in plain words
Lofexidine and Sertraline 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; Sertraline belongs to Central Nervous System.
Why it happens
Additive QT prolongation, with lofexidine-induced bradycardia increasing the risk.
What to do
Check ECG and electrolytes at baseline and monitor pulse and blood pressure during lofexidine treatment. Avoid combining with further QT-prolonging drugs.
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 Sertraline
- Isocarboxazid + Sertraline Contraindicated
- Methylene blue + Sertraline Contraindicated
- Phenelzine + Sertraline Contraindicated
- Pimozide + Sertraline Contraindicated
- Selegiline transdermal + Sertraline Contraindicated
- Selegiline + Sertraline 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 Sertraline?
MediHelp rates the interaction as moderate. Lofexidine and Sertraline 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 prolongs the QT interval and can cause bradycardia and hypotension. Sertraline may add a small QT effect, so the arrhythmia risk is increased in patients with other risk factors.
How serious is the interaction between Lofexidine and Sertraline?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check ECG and electrolytes at baseline and monitor pulse and blood pressure during lofexidine treatment. Avoid combining with further QT-prolonging drugs.
What other medicines interact with Sertraline?
MediHelp also lists interactions of Sertraline with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Sertraline page.
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