Blood problems after Ketoconazole in dogs

77 reports to the FDA describe blood problems in dogs given Ketoconazole. That is 3.4% of all reports for this medicine, compared with 1.8% across reports for all dog medicines, so it is reported unusually often with this medicine.

77Reports
60%Marked serious
14%Recovered
25%Died or euthanised
33 daysTypical onset
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How soon it started

Same day
6 10%
1–2 days
6 10%
3–7 days
4 6.8%
1–4 weeks
10 17%
Over a month
33 56%

How the animals did

Recovered
10 13%
Recovered with lasting effects
1 1.3%
Still unwell when reported
34 44%
Died
9 12%
Euthanised
10 13%
Not known
13 17%

Problems reported at the same time

Age of the animals

Under 1 year
1
1–3 years
16
4–7 years
27
8–11 years
26
12+ years
7

About this medicine

Type: medicine.

Questions owners ask

Can Ketoconazole cause blood problems in dogs?
77 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 33 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).

Blood problems with similar medicines

All reported side effects of Ketoconazole in dogs · Medicines most reported with blood problems