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Drug interactions

Dextromoramide + Meperidine

Severity: Major

Dextromoramide and Meperidine: major interaction.

Last updated Sources: US FDA label

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

Two opioid agonists together cause additive analgesia, sedation and respiratory depression. Overdose, coma and death can occur, particularly with dextromoramide, which is a potent short-acting opioid.

What this interaction means in plain words

Dextromoramide and Meperidine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.

Evidence level: Moderate

Why it happens

Additive mu-opioid receptor agonism.

What to do

Avoid concurrent use of two full opioids unless closely supervised, and use reduced doses. Monitor respiratory rate and sedation and have naloxone available.

What to ask your pharmacist

  • Does the benefit of taking both outweigh the risk in my case?
  • Do I need any blood test, ECG or other check while on both?
  • What early warning signs should I watch for, and what should I do if they appear?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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References

Frequently asked questions

Can I take Dextromoramide with Meperidine?

MediHelp rates the interaction as major. Dextromoramide and Meperidine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Two opioid agonists together cause additive analgesia, sedation and respiratory depression. Overdose, coma and death can occur, particularly with dextromoramide, which is a potent short-acting opioid.

How serious is the interaction between Dextromoramide and Meperidine?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use of two full opioids unless closely supervised, and use reduced doses. Monitor respiratory rate and sedation and have naloxone available.

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.

Full monographs, dosing and an interaction checker in the MediHelp app

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