Excessive thirst after Famotidine in dogs

The FDA has received 102 reports of excessive thirst in dogs after Famotidine. That is 3.9% 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.

102Reports
70%Marked serious
15%Recovered
29%Died or euthanised
14 daysTypical onset
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How soon it started

Same day
17 20%
1–2 days
9 11%
3–7 days
10 12%
1–4 weeks
25 30%
Over a month
23 27%

How the animals did

Recovered
11 11%
Recovered with lasting effects
4 3.9%
Still unwell when reported
42 41%
Died
9 8.8%
Euthanised
21 21%
Not known
15 15%

Problems reported at the same time

Age of the animals

Under 1 year
1
1–3 years
11
4–7 years
26
8–11 years
45
12+ years
19

About this medicine

Type: medicine.

Questions owners ask

Can Famotidine cause excessive thirst in dogs?
102 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 14 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).

Excessive thirst with similar medicines

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