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Drug interactions

Nabilone + Naltrexone

Severity: Minor

Nabilone and Naltrexone: minor 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

Naltrexone blocks opioid receptors, which interact with the endocannabinoid system, and some reports suggest it may modify cannabinoid effects, possibly intensifying them. The clinical significance with nabilone is uncertain.

What this interaction means in plain words

Nabilone and Naltrexone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Nabilone belongs to Gastrointestinal Tract; Naltrexone belongs to Musculoskeletal.

Evidence level: Low

Why it happens

Possible pharmacodynamic modulation of cannabinoid effects via opioid receptor antagonism; not well established.

What to do

No dose change is routinely required; monitor for increased cannabinoid effects such as sedation, dizziness or mood change. Reassess if adverse effects emerge.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

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 Nabilone with Naltrexone?

MediHelp rates the interaction as minor. Nabilone and Naltrexone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Naltrexone blocks opioid receptors, which interact with the endocannabinoid system, and some reports suggest it may modify cannabinoid effects, possibly intensifying them. The clinical significance with nabilone is uncertain.

How serious is the interaction between Nabilone and Naltrexone?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose change is routinely required; monitor for increased cannabinoid effects such as sedation, dizziness or mood change. Reassess if adverse effects emerge.

What other medicines interact with Nabilone?

MediHelp also lists interactions of Nabilone with, for example, Alfentanil, Amobarbital, Belladonna and opium. The full list is on the Nabilone page.

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

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