Peer-reviewed veterinary case report
Famotidine raises dog stomach hormone briefly during 14-day treatment
By Mordecai, A et al.·Published in Journal of veterinary internal medicine·2011·Small Animal Internal Medicine, United States·View original on PubMed →
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Original publication title: Normal dogs treated with famotidine for 14 days have only transient increases in serum gastrin concentrations.
- Species:
- dog
Plain-English summary
A group of healthy dogs was given famotidine, a medication often used to reduce stomach acid, for 14 days to see how it affected their gastrin levels, which are hormones that help control stomach acid production. The dogs showed an increase in gastrin levels by day 3, but these levels returned to normal by the end of the treatment period. This means that famotidine does not cause long-term increases in gastrin levels in healthy dogs. If your dog is on famotidine, you can feel reassured that it won't lead to elevated gastrin levels.
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Abstract
BACKGROUND: In people, serum gastrin concentrations increase in response to administration of H(2) receptor antagonists, but the effect of famotidine administration on serum gastrin concentrations has not been evaluated in dogs. OBJECTIVES: To determine if serum gastrin concentrations increase in response to 14 days of famotidine treatment and the time needed to return to baseline after discontinuation of famotidine; define stability of gastrin in samples held at room temperature. ANIMALS: Eleven healthy dogs were included in part A (famotidine treatment) and 7 healthy dogs in Part B (serum gastrin stability). In part A, famotidine (0.5 mg/kg p.o. q12h) was administered for 14 days. Fasting blood samples were collected on days 0, 3, 7, 11, 14, 16, 18, 20, and 22. In part B, blood was collected after a 12-hour fast. Gastrin concentrations in serum samples held at room temperature for ≤30 minutes after sampling were compared to concentrations in samples held at room temperature for 150 minutes after sampling. RESULTS: Serum gastrin concentrations increased by day 3 of famotidine administration and returned to baseline concentrations in all dogs by day 14 despite continued famotidine administration. Serum gastrin concentrations were lower (20% mean decrease; P = .0005) in samples held at room temperature for 150 minutes. CONCLUSIONS AND CLINICAL IMPORTANCE: After 14 days of famotidine administration, clinically healthy dogs have normal serum gastrin concentrations. In a dog with clinical features consistent with gastrinoma, chronic famotidine administration is unlikely to contribute to increases in serum gastrin concentrations.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/22092612/