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Drug interactions

Lansoprazole + Vismodegib

Severity: Minor

Lansoprazole and Vismodegib: minor 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

Vismodegib has pH-dependent solubility, so acid-suppressing drugs may alter its absorption. The effect on vismodegib exposure and efficacy has not been shown to be clinically significant.

What this interaction means in plain words

Lansoprazole and Vismodegib have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Lansoprazole belongs to Gastrointestinal Tract; Vismodegib belongs to Oncology.

Evidence level: Moderate

Why it happens

Higher gastric pH from lansoprazole may reduce vismodegib solubility and absorption, though labeling reports no clinically relevant effect.

What to do

No dose adjustment is required. Monitor tumor response and consider whether acid suppression is still needed.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

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 Lansoprazole with Vismodegib?

MediHelp rates the interaction as minor. Lansoprazole and Vismodegib have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Vismodegib has pH-dependent solubility, so acid-suppressing drugs may alter its absorption. The effect on vismodegib exposure and efficacy has not been shown to be clinically significant.

How serious is the interaction between Lansoprazole and Vismodegib?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose adjustment is required. Monitor tumor response and consider whether acid suppression is still needed.

What other medicines interact with Lansoprazole?

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

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