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Drug interactions

Rabeprazole + Sotorasib

Severity: Major

Rabeprazole and Sotorasib: 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

Sotorasib solubility is pH dependent, and proton pump inhibitors reduce its exposure. This may lessen antitumor efficacy.

What this interaction means in plain words

Rabeprazole and Sotorasib 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.

Rabeprazole belongs to Gastrointestinal Tract; Sotorasib belongs to Oncology.

Evidence level: High

Why it happens

Elevated gastric pH reduces sotorasib dissolution and absorption.

What to do

Avoid PPIs and H2 antagonists where possible. If acid reduction is required, give sotorasib 4 hours before or 10 hours after a locally acting antacid.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Rabeprazole with Sotorasib?

MediHelp rates the interaction as major. Rabeprazole and Sotorasib 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. Sotorasib solubility is pH dependent, and proton pump inhibitors reduce its exposure. This may lessen antitumor efficacy.

How serious is the interaction between Rabeprazole and Sotorasib?

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 PPIs and H2 antagonists where possible. If acid reduction is required, give sotorasib 4 hours before or 10 hours after a locally acting antacid.

What other medicines interact with Rabeprazole?

MediHelp also lists interactions of Rabeprazole with, for example, Rilpivirine, Acalabrutinib, Atazanavir. The full list is on the Rabeprazole page.

Full monographs, dosing and an interaction checker in the MediHelp app

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