Collapse after Famotidine in dogs

92 reports to the FDA describe collapse in dogs given Famotidine. That is 3.5% of all reports for this medicine, compared with 0.9% across reports for all dog medicines, so it is reported unusually often with this medicine.

92Reports
99%Marked serious
15%Recovered
55%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
43 54%
1–2 days
5 6.3%
3–7 days
9 11%
1–4 weeks
7 8.8%
Over a month
16 20%

How the animals did

Recovered
14 15%
Still unwell when reported
22 24%
Died
30 33%
Euthanised
21 23%
Not known
5 5.4%

Problems reported at the same time

Age of the animals

Under 1 year
6
1–3 years
22
4–7 years
16
8–11 years
30
12+ years
18

About this medicine

Type: medicine.

Questions owners ask

Can Famotidine cause collapse in dogs?
92 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 the same day 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).

Collapse with similar medicines

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