Hair loss after Isoflurane in cats

114 reports to the FDA describe hair loss in cats given Isoflurane. That is 5.6% of all reports for this medicine, compared with 14% across reports for all cat medicines, so it is reported less often than average with this medicine.

114Reports
3.5%Marked serious
11%Recovered
0.9%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
19 17%
1–2 days
26 23%
3–7 days
42 38%
1–4 weeks
18 16%
Over a month
7 6.3%

How the animals did

Recovered
13 11%
Still unwell when reported
67 59%
Euthanised
1 0.9%
Not known
33 29%

Problems reported at the same time

Age of the animals

Under 1 year
7
1–3 years
9
4–7 years
26
8–11 years
48
12+ years
24

About this medicine

Type: medicine.

Questions owners ask

Can Isoflurane cause hair loss in cats?
114 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 3 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).

Hair loss with similar medicines

All reported side effects of Isoflurane in cats · Medicines most reported with hair loss