Leucocytosis after Insulin in cats

The FDA has received 49 reports of leucocytosis in cats after Insulin. That is 1.3% of all reports for this medicine, compared with 0.9% across reports for all cat medicines.

49Reports

80%Marked serious

4.1%Recovered

31%Died or euthanised

22 daysTypical onset

How soon it started

Same day

5 17%

1–2 days

5 17%

3–7 days

2 6.9%

1–4 weeks

7 24%

Over a month

10 34%

How the animals did

Recovered

1 2.0%

Recovered with lasting effects

1 2.0%

Still unwell when reported

19 39%

Died

4 8.2%

Euthanised

11 22%

Not known

13 27%

Problems reported at the same time

30 61%

20 41%

20 41%

19 39%

16 33%

15 31%

14 29%

Didn't work as expected

14 29%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Insulin treats diabetes.

Questions owners ask

Can Insulin cause leucocytosis in cats?: 49 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 22 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).

Leucocytosis with similar medicines

Leucocytosis after Velagliflozin (Senvelgo) 61 reports · 1.3% of its reports
Leucocytosis after Bexagliflozin (Bexacat) 66 reports · 1.6% of its reports
Leucocytosis after Methimazole 30 reports · 1.7% of its reports

All reported side effects of Insulin in cats · Medicines most reported with leucocytosis