Drug interactions
Lofexidine + Meperidine
Severity: Moderate
Lofexidine and Meperidine: 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 causing sedation, hypotension and bradycardia, which add to the CNS depression of meperidine. This can increase the risk of oversedation and low blood pressure.
What this interaction means in plain words
Lofexidine and Meperidine 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; Meperidine belongs to Musculoskeletal.
Why it happens
Additive CNS depression and hypotensive effects.
What to do
Monitor blood pressure, heart rate and sedation, and reduce the opioid dose if drowsiness or hypotension develops.
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 Meperidine
- Alvimopan + Meperidine Contraindicated
- Isocarboxazid + Meperidine Contraindicated
- Meperidine + Methylene blue Contraindicated
- Meperidine + Olanzapine / samidorphan Contraindicated
- Meperidine + Phenelzine Contraindicated
- Meperidine + Procarbazine 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 Meperidine?
MediHelp rates the interaction as moderate. Lofexidine and Meperidine 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 causing sedation, hypotension and bradycardia, which add to the CNS depression of meperidine. This can increase the risk of oversedation and low blood pressure.
How serious is the interaction between Lofexidine and Meperidine?
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 reduce the opioid dose if drowsiness or hypotension develops.
What other medicines interact with Meperidine?
MediHelp also lists interactions of Meperidine with, for example, Alvimopan, Isocarboxazid, Methylene blue. The full list is on the Meperidine page.
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