Loss of appetite after Famotidine in dogs

The FDA has received 964 reports of loss of appetite in dogs after Famotidine. That is 36% of all reports for this medicine, compared with 8.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

964Reports
66%Marked serious
16%Recovered
35%Died or euthanised
5 daysTypical onset
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How soon it started

Same day
164 20%
1–2 days
143 18%
3–7 days
142 18%
1–4 weeks
185 23%
Over a month
172 21%

How the animals did

Recovered
145 15%
Recovered with lasting effects
8 0.8%
Still unwell when reported
342 35%
Died
101 10%
Euthanised
236 24%
Not known
132 14%

Problems reported at the same time

569 59%
473 49%
333 35%
310 32%

Age of the animals

Under 1 year
46
1–3 years
140
4–7 years
277
8–11 years
312
12+ years
179

About this medicine

Type: medicine.

Questions owners ask

Can Famotidine cause loss of appetite in dogs?
964 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?
In half of the reports with dates, it started within 5 days of the first dose.
What should I do?
Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Loss of appetite with similar medicines

All reported side effects of Famotidine in dogs · Medicines most reported with loss of appetite