Swelling after Furosemide in cats

52 reports to the FDA describe swelling in cats given Furosemide. That is 17% of all reports for this medicine, compared with 1.9% across reports for all cat medicines, so it is reported unusually often with this medicine.

52Reports
92%Marked serious
7.7%Recovered
62%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
21 44%
1–2 days
10 21%
3–7 days
8 17%
1–4 weeks
6 13%
Over a month
3 6.3%

How the animals did

Recovered
4 7.7%
Still unwell when reported
9 17%
Died
15 29%
Euthanised
17 33%
Not known
7 13%

Problems reported at the same time

Age of the animals

Under 1 year
5
1–3 years
8
4–7 years
17
8–11 years
9
12+ years
13

About this medicine

Type: medicine.

Questions owners ask

Can Furosemide cause swelling in cats?
52 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 1 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).

Swelling with similar medicines

All reported side effects of Furosemide in cats · Medicines most reported with swelling