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Drug interactions

Marijuana + Nimodipine

Severity: Minor

Marijuana and Nimodipine: 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

Cannabinoids may inhibit CYP3A4 in vitro and could modestly raise nimodipine levels. Cannabis can also cause tachycardia and orthostatic hypotension, which may add to nimodipine effects.

What this interaction means in plain words

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

Evidence level: Low

Why it happens

Possible CYP3A4 inhibition by cannabinoids plus additive cardiovascular effects; clinical data are limited.

What to do

Monitor blood pressure and heart rate in patients who use cannabis. Counsel about dizziness on standing.

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 Marijuana with Nimodipine?

MediHelp rates the interaction as minor. Marijuana and Nimodipine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Cannabinoids may inhibit CYP3A4 in vitro and could modestly raise nimodipine levels. Cannabis can also cause tachycardia and orthostatic hypotension, which may add to nimodipine effects.

How serious is the interaction between Marijuana and Nimodipine?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure and heart rate in patients who use cannabis. Counsel about dizziness on standing.

What other medicines interact with Nimodipine?

MediHelp also lists interactions of Nimodipine with, for example, Apalutamide, Carbamazepine, Ceritinib. The full list is on the Nimodipine page.

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

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