Drug interactions
Atazanavir + Pantoprazole
Severity: Major
Atazanavir and Pantoprazole: 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
Atazanavir needs an acidic environment for dissolution, and pantoprazole markedly reduces its absorption. This can lead to subtherapeutic antiretroviral levels, virologic failure and resistance.
What this interaction means in plain words
Atazanavir and Pantoprazole 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.
Atazanavir belongs to Anti Virals; Pantoprazole belongs to Gastrointestinal Tract.
Why it happens
Elevated gastric pH reduces atazanavir solubility and oral absorption.
What to do
Avoid in treatment-experienced patients; in treatment-naive patients follow labeling with ritonavir boosting, limited PPI dose and staggered timing, with virologic monitoring.
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 Pantoprazole
- Pantoprazole + Rilpivirine Contraindicated
- Acalabrutinib + Pantoprazole Major
- Dacomitinib + Pantoprazole Major
- Dasatinib + Pantoprazole Major
- Erlotinib + Pantoprazole Major
- Gefitinib + Pantoprazole Major
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 Pantoprazole?
MediHelp rates the interaction as major. Atazanavir and Pantoprazole 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. Atazanavir needs an acidic environment for dissolution, and pantoprazole markedly reduces its absorption. This can lead to subtherapeutic antiretroviral levels, virologic failure and resistance.
How serious is the interaction between Atazanavir and Pantoprazole?
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 in treatment-experienced patients; in treatment-naive patients follow labeling with ritonavir boosting, limited PPI dose and staggered timing, with virologic monitoring.
What other medicines interact with Pantoprazole?
MediHelp also lists interactions of Pantoprazole with, for example, Rilpivirine, Acalabrutinib, Dacomitinib. The full list is on the Pantoprazole page.
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