Lethargy after Insulin in dogs

895 reports to the FDA describe lethargy in dogs given Insulin. That is 12% of all reports for this medicine, compared with 11% across reports for all dog medicines.

895Reports

55%Marked serious

31%Recovered

15%Died or euthanised

18 daysTypical onset

How soon it started

Same day

55 14%

1–2 days

40 10%

3–7 days

59 15%

1–4 weeks

77 19%

Over a month

166 42%

How the animals did

Recovered

231 26%

Recovered with lasting effects

47 5.3%

Still unwell when reported

198 22%

Died

61 6.8%

Euthanised

73 8.2%

Not known

285 32%

Problems reported at the same time

Didn't work as expected

322 36%

318 36%

237 26%

198 22%

147 16%

135 15%

119 13%

108 12%

Age of the animals

Under 1 year

1–3 years

4–7 years

142

8–11 years

464

12+ years

265

About this medicine

Insulin treats diabetes.

Questions owners ask

Can Insulin cause lethargy in dogs?: 895 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 18 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).

Lethargy with similar medicines

Lethargy after Trilostane (Vetoryl) 2,568 reports · 22% of its reports
Lethargy after Phenylpropanolamine (Proin) 668 reports · 16% of its reports
Lethargy after Levothyroxine 470 reports · 16% of its reports

All reported side effects of Insulin in dogs · Medicines most reported with lethargy