Drug interactions
Alprazolam + Saquinavir
Severity: Major
Alprazolam and Saquinavir: major 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
Ritonavir-boosted saquinavir inhibits CYP3A4 and can substantially increase alprazolam exposure, resulting in prolonged sedation and respiratory depression.
What this interaction means in plain words
Alprazolam and Saquinavir can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Inhibition of CYP3A4-mediated alprazolam metabolism by saquinavir and its ritonavir booster.
What to do
Avoid the combination and use lorazepam or another non-CYP3A benzodiazepine. If alprazolam is essential, reduce the dose and monitor for sedation.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Alprazolam
- Alprazolam + Calcium / magnesium / potassium / sodium oxybates Contraindicated
- Alprazolam + Itraconazole Contraindicated
- Alprazolam + Ketoconazole Contraindicated
- Alprazolam + Levoketoconazole Contraindicated
- Alprazolam + Sodium oxybate Contraindicated
- Alfentanil + Alprazolam Major
Frequently asked questions
Can I take Alprazolam with Saquinavir?
MediHelp rates the interaction as major. Alprazolam and Saquinavir can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Ritonavir-boosted saquinavir inhibits CYP3A4 and can substantially increase alprazolam exposure, resulting in prolonged sedation and respiratory depression.
How serious is the interaction between Alprazolam and Saquinavir?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination and use lorazepam or another non-CYP3A benzodiazepine. If alprazolam is essential, reduce the dose and monitor for sedation.
What other medicines interact with Alprazolam?
MediHelp also lists interactions of Alprazolam with, for example, Calcium / magnesium / potassium / sodium oxybates, Itraconazole, Ketoconazole. The full list is on the Alprazolam page.
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