Breathing problems after Furosemide in cats

The FDA has received 87 reports of breathing problems in cats after Furosemide. That is 29% of all reports for this medicine, compared with 4.7% across reports for all cat medicines, so it is reported unusually often with this medicine.

87Reports
97%Marked serious
11%Recovered
57%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
32 41%
1–2 days
14 18%
3–7 days
10 13%
1–4 weeks
11 14%
Over a month
11 14%

How the animals did

Recovered
10 11%
Still unwell when reported
12 14%
Died
24 28%
Euthanised
26 30%
Not known
15 17%

Problems reported at the same time

Age of the animals

Under 1 year
11
1–3 years
12
4–7 years
18
8–11 years
20
12+ years
25

About this medicine

Type: medicine.

Questions owners ask

Can Furosemide cause breathing problems in cats?
87 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).

Breathing problems with similar medicines

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