Seizures after Furosemide in dogs

156 reports to the FDA describe seizures in dogs given Furosemide. That is 10% of all reports for this medicine, compared with 4.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

156Reports
94%Marked serious
29%Recovered
33%Died or euthanised
7 daysTypical onset
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How soon it started

Same day
26 23%
1–2 days
21 19%
3–7 days
11 9.7%
1–4 weeks
16 14%
Over a month
39 35%

How the animals did

Recovered
44 28%
Recovered with lasting effects
2 1.3%
Still unwell when reported
30 19%
Died
24 15%
Euthanised
28 18%
Not known
28 18%

Problems reported at the same time

Age of the animals

Under 1 year
4
1–3 years
2
4–7 years
18
8–11 years
49
12+ years
82

About this medicine

Type: medicine.

Questions owners ask

Can Furosemide cause seizures in dogs?
156 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 7 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).

Seizures with similar medicines

All reported side effects of Furosemide in dogs · Medicines most reported with seizures