Drug interactions
Famotidine + Secretin
Severity: Moderate
Famotidine and Secretin: moderate 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
H2 receptor antagonists can alter gastrin responses during secretin stimulation testing. This may produce a false-positive result suggesting gastrinoma.
What this interaction means in plain words
Famotidine and Secretin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Acid suppression raises gastrin secretion and exaggerates the gastrin response to secretin, confounding the test (diagnostic interference rather than drug toxicity).
What to do
Stop famotidine at least 2 days before secretin stimulation testing, under medical supervision, and interpret results accordingly.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Famotidine
Frequently asked questions
Can I take Famotidine with Secretin?
MediHelp rates the interaction as moderate. Famotidine and Secretin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. H2 receptor antagonists can alter gastrin responses during secretin stimulation testing. This may produce a false-positive result suggesting gastrinoma.
How serious is the interaction between Famotidine and Secretin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Stop famotidine at least 2 days before secretin stimulation testing, under medical supervision, and interpret results accordingly.
What other medicines interact with Famotidine?
MediHelp also lists interactions of Famotidine with, for example, Atazanavir, Dasatinib, Infigratinib. The full list is on the Famotidine page.
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