Didn't stop fleas after Furosemide in dogs

The FDA has received 36 reports of didn't stop fleas in dogs after Furosemide. That is 2.4% of all reports for this medicine, compared with 6.2% across reports for all dog medicines, so it is reported less often than average with this medicine.

36Reports
25%Marked serious
17%Recovered
5.6%Died or euthanised
128 daysTypical onset
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How soon it started

Same day
2 14%
1–2 days
0 0.0%
3–7 days
0 0.0%
1–4 weeks
2 14%
Over a month
10 71%

How the animals did

Recovered
2 5.6%
Recovered with lasting effects
4 11%
Still unwell when reported
2 5.6%
Euthanised
2 5.6%
Not known
26 72%

Problems reported at the same time

Itching
7 19%
Didn't work as expected
4 11%
Cough
3 8.3%
Seizures
3 8.3%
Unpalatable
2 5.6%
Cardiac enlargement
2 5.6%
Vocalising
2 5.6%
Lethargy
2 5.6%

Age of the animals

Under 1 year
0
1–3 years
0
4–7 years
3
8–11 years
12
12+ years
19

About this medicine

Type: medicine.

Questions owners ask

Can Furosemide cause didn't stop fleas in dogs?
36 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 128 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).

Didn't stop fleas with similar medicines

All reported side effects of Furosemide in dogs · Medicines most reported with didn't stop fleas