Drug interactions
Pantoprazole + Saquinavir
Severity: Moderate
Pantoprazole 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
Proton pump inhibitors have been reported to raise saquinavir exposure when given with ritonavir-boosted saquinavir, which could increase saquinavir toxicity such as QT and PR prolongation. The legacy direction is uncertain, but a clinically relevant change in exposure is plausible.
What this interaction means in plain words
Pantoprazole 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
The mechanism is not fully established; altered gastric pH or effects on transport or metabolism may raise saquinavir exposure.
What to do
Monitor ECG and for saquinavir adverse effects when combining the two drugs. Use the lowest effective pantoprazole dose and consider an alternative antiretroviral if QT risk is high.
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 Pantoprazole
- Pantoprazole + Rilpivirine Contraindicated
- Acalabrutinib + Pantoprazole Major
- Atazanavir + Pantoprazole Major
- Dacomitinib + Pantoprazole Major
- Dasatinib + Pantoprazole Major
- Erlotinib + Pantoprazole Major
Frequently asked questions
Can I take Pantoprazole with Saquinavir?
MediHelp rates the interaction as moderate. Pantoprazole 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. Proton pump inhibitors have been reported to raise saquinavir exposure when given with ritonavir-boosted saquinavir, which could increase saquinavir toxicity such as QT and PR prolongation. The legacy direction is uncertain, but a clinically relevant change in exposure is plausible.
How serious is the interaction between Pantoprazole 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: Monitor ECG and for saquinavir adverse effects when combining the two drugs. Use the lowest effective pantoprazole dose and consider an alternative antiretroviral if QT risk is high.
What other medicines interact with Pantoprazole?
MediHelp also lists interactions of Pantoprazole with, for example, Rilpivirine, Acalabrutinib, Atazanavir. The full list is on the Pantoprazole page.
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