Drug interactions
Lofexidine + Paroxetine
Severity: Moderate
Lofexidine and Paroxetine: 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
Paroxetine strongly inhibits CYP2D6, which contributes to lofexidine metabolism, so lofexidine exposure may rise. This can increase hypotension, bradycardia and sedation.
What this interaction means in plain words
Lofexidine and Paroxetine 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; Paroxetine belongs to Central Nervous System.
Why it happens
Strong CYP2D6 inhibition by paroxetine reduces lofexidine clearance.
What to do
Monitor blood pressure and heart rate, and consider reducing the lofexidine dose. Advise patients about orthostatic dizziness.
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 Paroxetine
- Isocarboxazid + Paroxetine Contraindicated
- Methylene blue + Paroxetine Contraindicated
- Paroxetine + Phenelzine Contraindicated
- Paroxetine + Pimozide Contraindicated
- Paroxetine + Procarbazine Contraindicated
- Paroxetine + Selegiline 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 Paroxetine?
MediHelp rates the interaction as moderate. Lofexidine and Paroxetine 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. Paroxetine strongly inhibits CYP2D6, which contributes to lofexidine metabolism, so lofexidine exposure may rise. This can increase hypotension, bradycardia and sedation.
How serious is the interaction between Lofexidine and Paroxetine?
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 and heart rate, and consider reducing the lofexidine dose. Advise patients about orthostatic dizziness.
What other medicines interact with Paroxetine?
MediHelp also lists interactions of Paroxetine with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Paroxetine page.
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