Fever after Famotidine in dogs

The FDA has received 161 reports of fever in dogs after Famotidine. That is 6.1% of all reports for this medicine, compared with 1.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

161Reports
81%Marked serious
15%Recovered
39%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
47 34%
1–2 days
25 18%
3–7 days
18 13%
1–4 weeks
19 14%
Over a month
28 20%

How the animals did

Recovered
23 14%
Recovered with lasting effects
1 0.6%
Still unwell when reported
55 34%
Died
19 12%
Euthanised
44 27%
Not known
19 12%

Problems reported at the same time

Age of the animals

Under 1 year
24
1–3 years
34
4–7 years
43
8–11 years
37
12+ years
19

About this medicine

Type: medicine.

Questions owners ask

Can Famotidine cause fever in dogs?
161 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 2 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).

Fever with similar medicines

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