Loss of appetite after Famotidine in cats

172 reports to the FDA describe loss of appetite in cats given Famotidine. That is 42% of all reports for this medicine, compared with 14% across reports for all cat medicines, so it is reported unusually often with this medicine.

172Reports
69%Marked serious
13%Recovered
25%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
41 26%
1–2 days
49 31%
3–7 days
24 15%
1–4 weeks
23 14%
Over a month
23 14%

How the animals did

Recovered
22 13%
Still unwell when reported
76 44%
Died
11 6.4%
Euthanised
32 19%
Not known
31 18%

Problems reported at the same time

Age of the animals

Under 1 year
15
1–3 years
30
4–7 years
30
8–11 years
32
12+ years
63

About this medicine

Type: medicine.

Questions owners ask

Can Famotidine cause loss of appetite in cats?
172 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).

Loss of appetite with similar medicines

All reported side effects of Famotidine in cats · Medicines most reported with loss of appetite