Swelling after Famotidine in dogs

The FDA has received 354 reports of swelling in dogs after Famotidine. That is 13% of all reports for this medicine, compared with 2.8% across reports for all dog medicines, so it is reported unusually often with this medicine.

354Reports
55%Marked serious
16%Recovered
21%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
90 30%
1–2 days
54 18%
3–7 days
56 18%
1–4 weeks
62 20%
Over a month
43 14%

How the animals did

Recovered
54 15%
Recovered with lasting effects
1 0.3%
Still unwell when reported
92 26%
Died
32 9.0%
Euthanised
42 12%
Not known
133 38%

Problems reported at the same time

Age of the animals

Under 1 year
15
1–3 years
50
4–7 years
128
8–11 years
114
12+ years
39

About this medicine

Type: medicine.

Questions owners ask

Can Famotidine cause swelling in dogs?
354 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 3 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).

Swelling with similar medicines

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