Weight loss after Isoflurane in dogs

The FDA has received 85 reports of weight loss in dogs after Isoflurane. That is 3.1% of all reports for this medicine, compared with 1.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

85Reports
72%Marked serious
19%Recovered
27%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
17 23%
1–2 days
17 23%
3–7 days
16 22%
1–4 weeks
12 16%
Over a month
11 15%

How the animals did

Recovered
14 16%
Recovered with lasting effects
2 2.4%
Still unwell when reported
30 35%
Died
5 5.9%
Euthanised
18 21%
Not known
16 19%

Problems reported at the same time

Age of the animals

Under 1 year
11
1–3 years
17
4–7 years
26
8–11 years
24
12+ years
6

About this medicine

Type: medicine.

Questions owners ask

Can Isoflurane cause weight loss in dogs?
85 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).

Weight loss with similar medicines

All reported side effects of Isoflurane in dogs · Medicines most reported with weight loss