Loss of appetite after Ketoconazole in cats

The FDA has received 35 reports of loss of appetite in cats after Ketoconazole. That is 38% of all reports for this medicine, compared with 14% across reports for all cat medicines, so it is reported unusually often with this medicine.

35Reports
71%Marked serious
14%Recovered
5.7%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
13 39%
1–2 days
14 42%
3–7 days
1 3.0%
1–4 weeks
3 9.1%
Over a month
2 6.1%

How the animals did

Recovered
4 11%
Recovered with lasting effects
1 2.9%
Still unwell when reported
9 26%
Died
1 2.9%
Euthanised
1 2.9%
Not known
19 54%

Problems reported at the same time

Anisocoria
8 23%
Head tilt - ear disorder
7 20%
Weight loss
7 20%
Vomiting
6 17%
Kidney problems
6 17%
Third eyelid protrusion
6 17%
Horner's syndrome
6 17%

Age of the animals

Under 1 year
3
1–3 years
3
4–7 years
7
8–11 years
12
12+ years
10

About this medicine

Type: medicine.

Questions owners ask

Can Ketoconazole cause loss of appetite in cats?
35 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).

Loss of appetite with similar medicines

All reported side effects of Ketoconazole in cats · Medicines most reported with loss of appetite