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Drug interactions

Dronabinol + Flurbiprofen

Severity: Minor

Dronabinol and Flurbiprofen: 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

Dronabinol is metabolized mainly by CYP2C9, and flurbiprofen is a CYP2C9 substrate that competes for this enzyme rather than being a meaningful inhibitor. Any rise in dronabinol exposure is likely small, though additive CNS effects such as drowsiness or dizziness are possible.

What this interaction means in plain words

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

Dronabinol belongs to Central Nervous System; Flurbiprofen belongs to Musculoskeletal.

Evidence level: Low

Why it happens

Possible competition for CYP2C9 metabolism, which is theoretical and not well documented.

What to do

No dose change is usually needed; monitor for excess sedation, dizziness or tachycardia when starting the combination.

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 Dronabinol with Flurbiprofen?

MediHelp rates the interaction as minor. Dronabinol and Flurbiprofen have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Dronabinol is metabolized mainly by CYP2C9, and flurbiprofen is a CYP2C9 substrate that competes for this enzyme rather than being a meaningful inhibitor. Any rise in dronabinol exposure is likely small, though additive CNS effects such as drowsiness or dizziness are possible.

How serious is the interaction between Dronabinol and Flurbiprofen?

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 usually needed; monitor for excess sedation, dizziness or tachycardia when starting the combination.

What other medicines interact with Flurbiprofen?

MediHelp also lists interactions of Flurbiprofen with, for example, Ketorolac, Ketorolac intranasal, Aceclofenac. The full list is on the Flurbiprofen page.

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

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