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Drug interactions

Metaxalone + Oliceridine

Severity: Major

Metaxalone and Oliceridine: major 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

Combining an opioid with a centrally acting muscle relaxant can cause profound sedation, respiratory depression, coma and death. Metaxalone's mild anticholinergic activity may also add to opioid-related constipation or urinary retention.

What this interaction means in plain words

Metaxalone and Oliceridine 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.

Metaxalone belongs to Musculoskeletal; Oliceridine belongs to Musculoskeletal.

Evidence level: High

Why it happens

Additive CNS and respiratory depression from opioid agonism and muscle relaxant sedation.

What to do

Reserve concurrent use for patients with no adequate alternatives, using the lowest doses and shortest duration. Monitor closely for sedation and respiratory depression.

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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Frequently asked questions

Can I take Metaxalone with Oliceridine?

MediHelp rates the interaction as major. Metaxalone and Oliceridine 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. Combining an opioid with a centrally acting muscle relaxant can cause profound sedation, respiratory depression, coma and death. Metaxalone's mild anticholinergic activity may also add to opioid-related constipation or urinary retention.

How serious is the interaction between Metaxalone and Oliceridine?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reserve concurrent use for patients with no adequate alternatives, using the lowest doses and shortest duration. Monitor closely for sedation and respiratory depression.

What other medicines interact with Metaxalone?

MediHelp also lists interactions of Metaxalone with, for example, Alfentanil, Belladonna and opium, Benzhydrocodone / acetaminophen. The full list is on the Metaxalone page.

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

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

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