Isoflurane side effects in dogs

2,767 reports sent to the FDA between 1995 and 2026 involve Isoflurane in dogs. The most reported problems were loss of appetite, vomiting, lethargy. 54% were marked serious, and where it was recorded, signs eased after stopping the medicine in 64% of cases.

2,767Reports
54%Marked serious
24%Only medicine involved
39%Recovered
20%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

448 16%
377 14%
286 10%
262 9.5%
162 5.9%
140 5.1%
135 4.9%
135 4.9%

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.

Didn't prevent heartworm
7 0.3%
Didn't stop ticks
1 0.0%
Didn't stop worms
1 0.0%

How soon problems started

Same day
1,217 60%
1–2 days
297 15%
3–7 days
241 12%
1–4 weeks
148 7.3%
Over a month
116 5.7%

Time from the first dose to the first sign, where both dates were reported (2,019 reports).

How the animals did

Recovered
1,054 38%
Recovered with lasting effects
35 1.3%
Still unwell when reported
525 19%
Died
420 15%
Euthanised
127 4.6%
Not known
606 22%

Breeds named most often

Popular breeds appear more often because there are more of them.

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