Breathing problems after Famotidine in dogs

321 reports to the FDA describe breathing problems in dogs given Famotidine. That is 12% of all reports for this medicine, compared with 2.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

321Reports
81%Marked serious
15%Recovered
42%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
81 30%
1–2 days
43 16%
3–7 days
46 17%
1–4 weeks
54 20%
Over a month
44 16%

How the animals did

Recovered
46 14%
Recovered with lasting effects
2 0.6%
Still unwell when reported
92 29%
Died
68 21%
Euthanised
66 21%
Not known
47 15%

Problems reported at the same time

Age of the animals

Under 1 year
15
1–3 years
51
4–7 years
82
8–11 years
115
12+ years
58

About this medicine

Type: medicine.

Questions owners ask

Can Famotidine cause breathing problems in dogs?
321 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).

Breathing problems with similar medicines

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