Drug interactions
Dasatinib + Famotidine
Severity: Major
Dasatinib and Famotidine: 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
Dasatinib absorption depends on gastric acidity, and famotidine reduces dasatinib exposure. This may compromise leukemia control.
What this interaction means in plain words
Dasatinib and Famotidine 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.
Dasatinib belongs to Oncology; Famotidine belongs to Gastrointestinal Tract.
Why it happens
Decreased pH-dependent dissolution and absorption of dasatinib.
What to do
Avoid H2 blockers and proton pump inhibitors with dasatinib; use an antacid given 2 hours before or after dasatinib if needed.
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 Famotidine
Other interactions of Dasatinib
- Dasatinib + Saquinavir Contraindicated
- Dasatinib + Thioridazine Contraindicated
- Adagrasib + Dasatinib Major
- Amiodarone + Dasatinib Major
- Amisulpride + Dasatinib Major
- Amitriptyline + Dasatinib Major
Frequently asked questions
Can I take Dasatinib with Famotidine?
MediHelp rates the interaction as major. Dasatinib and Famotidine 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. Dasatinib absorption depends on gastric acidity, and famotidine reduces dasatinib exposure. This may compromise leukemia control.
How serious is the interaction between Dasatinib and Famotidine?
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 H2 blockers and proton pump inhibitors with dasatinib; use an antacid given 2 hours before or after dasatinib if needed.
What other medicines interact with Famotidine?
MediHelp also lists interactions of Famotidine with, for example, Atazanavir, Infigratinib, Itraconazole. The full list is on the Famotidine page.
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