Drug interactions
Atazanavir + Rabeprazole
Severity: Major
Atazanavir and Rabeprazole: 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 absorption. PPIs sharply reduce atazanavir exposure, risking virologic failure and resistance.
What this interaction means in plain words
Atazanavir and Rabeprazole 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; Rabeprazole belongs to Gastrointestinal Tract.
Why it happens
Increased gastric pH decreases atazanavir solubility and absorption.
What to do
Avoid in treatment-experienced patients. In naive patients on ritonavir-boosted atazanavir, use only a limited PPI dose taken about 12 hours before and monitor viral load.
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 Rabeprazole
- Rabeprazole + Rilpivirine Contraindicated
- Acalabrutinib + Rabeprazole Major
- Dacomitinib + Rabeprazole Major
- Dasatinib + Rabeprazole Major
- Erlotinib + Rabeprazole Major
- Gefitinib + Rabeprazole 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 Rabeprazole?
MediHelp rates the interaction as major. Atazanavir and Rabeprazole 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 absorption. PPIs sharply reduce atazanavir exposure, risking virologic failure and resistance.
How serious is the interaction between Atazanavir and Rabeprazole?
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 naive patients on ritonavir-boosted atazanavir, use only a limited PPI dose taken about 12 hours before and monitor viral load.
What other medicines interact with Rabeprazole?
MediHelp also lists interactions of Rabeprazole with, for example, Rilpivirine, Acalabrutinib, Dacomitinib. The full list is on the Rabeprazole page.
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