Drug interactions
Dronabinol + Saquinavir
Severity: Moderate
Dronabinol and Saquinavir: 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
Saquinavir, given with ritonavir, inhibits CYP3A4 and may increase dronabinol levels. This may cause stronger sedation, dizziness, tachycardia and mood effects.
What this interaction means in plain words
Dronabinol and Saquinavir 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.
Why it happens
Boosted saquinavir inhibits CYP3A4-mediated dronabinol metabolism.
What to do
Start with a low dronabinol dose and monitor for CNS and cardiovascular effects. Reduce the dose if adverse effects 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
Frequently asked questions
Can I take Dronabinol with Saquinavir?
MediHelp rates the interaction as moderate. Dronabinol and Saquinavir 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. Saquinavir, given with ritonavir, inhibits CYP3A4 and may increase dronabinol levels. This may cause stronger sedation, dizziness, tachycardia and mood effects.
How serious is the interaction between Dronabinol and Saquinavir?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Start with a low dronabinol dose and monitor for CNS and cardiovascular effects. Reduce the dose if adverse effects 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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