Drug interactions
Atazanavir + Dronabinol
Severity: Moderate
Atazanavir and Dronabinol: moderate 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
Atazanavir inhibits CYP3A4 and may raise dronabinol concentrations. This can increase psychoactive and cardiovascular effects such as tachycardia, dizziness, anxiety and sedation.
What this interaction means in plain words
Atazanavir and Dronabinol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Atazanavir belongs to Anti Virals; Dronabinol belongs to Central Nervous System.
Why it happens
Inhibition of CYP3A4-mediated dronabinol metabolism.
What to do
Monitor for excessive CNS effects, tachycardia and hypotension, and lower the dronabinol dose if these occur.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Dronabinol
- Cefotetan + Dronabinol Contraindicated
- Disulfiram + Dronabinol Contraindicated
- Dronabinol + Midazolam intranasal Major
- Dronabinol + Zuranolone Major
- Amobarbital + Dronabinol Moderate
- Apalutamide + Dronabinol Moderate
Other interactions of Atazanavir
- Alfuzosin + Atazanavir Contraindicated
- Atazanavir + Avanafil Contraindicated
- Atazanavir + Dronedarone Contraindicated
- Atazanavir + Eletriptan Contraindicated
- Atazanavir + Eplerenone Contraindicated
- Atazanavir + Ergotamine Contraindicated
Frequently asked questions
Can I take Atazanavir with Dronabinol?
MediHelp rates the interaction as moderate. Atazanavir and Dronabinol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Atazanavir inhibits CYP3A4 and may raise dronabinol concentrations. This can increase psychoactive and cardiovascular effects such as tachycardia, dizziness, anxiety and sedation.
How serious is the interaction between Atazanavir and Dronabinol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for excessive CNS effects, tachycardia and hypotension, and lower the dronabinol dose if these occur.
What other medicines interact with Dronabinol?
MediHelp also lists interactions of Dronabinol with, for example, Cefotetan, Disulfiram, Midazolam intranasal. The full list is on the Dronabinol page.
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