Congestive heart failure after Furosemide in dogs

26 reports to the FDA describe congestive heart failure in dogs given Furosemide. That is 1.7% of all reports for this medicine, compared with 0.0% across reports for all dog medicines, so it is reported unusually often with this medicine.

26Reports

96%Marked serious

15%Recovered

65%Died or euthanised

11 daysTypical onset

How soon it started

Same day

1 6.3%

1–2 days

4 25%

3–7 days

1 6.3%

1–4 weeks

4 25%

Over a month

6 38%

How the animals did

Recovered

2 7.7%

Recovered with lasting effects

2 7.7%

Still unwell when reported

2 7.7%

Died

10 38%

Euthanised

7 27%

Not known

3 12%

Problems reported at the same time

18 69%

11 42%

9 35%

8 31%

8 31%

7 27%

6 23%

6 23%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Furosemide cause congestive heart failure in dogs?: 26 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 11 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).

All reported side effects of Furosemide in dogs · Medicines most reported with congestive heart failure