Insulin side effects in cats

3,747 reports sent to the FDA between 2001 and 2026 involve Insulin in cats. The most reported problems were hypoglycaemia, loss of appetite, lethargy. 44% were marked serious, and where it was recorded, signs eased after stopping the medicine in 67% of cases.

3,747Reports

44%Marked serious

81%Only medicine involved

17%Recovered

12%Died or euthanised

About this medicine

Insulin treats diabetes.

Most reported side effects

759 20%

488 13%

472 13%

419 11%

351 9.4%

197 5.3%

196 5.2%

191 5.1%

182 4.9%

166 4.4%

155 4.1%

151 4.0%

124 3.3%

119 3.2%

115 3.1%

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 cat still getting fleas or heartworm), not about a side effect.

Didn't work as expected

1,967 52%

Didn't stop fleas

11 0.3%

Didn't prevent heartworm

1 0.0%

How soon problems started

Same day

461 26%

1–2 days

197 11%

3–7 days

191 11%

1–4 weeks

350 20%

Over a month

591 33%

Time from the first dose to the first sign, where both dates were reported (1,790 reports).

How the animals did

Recovered

619 17%

Recovered with lasting effects

35 0.9%

Still unwell when reported

705 19%

Died

231 6.2%

Euthanised

229 6.1%

Not known

1,928 51%

Breeds named most often

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

Domestic Shorthair 1,717 reports
Domestic 623 reports
Domestic Longhair 258 reports
American Shorthair 177 reports
Domestic Mediumhair 145 reports
Siamese 78 reports
Maine Coon 71 reports
Cat (other) 21 reports
Norwegian Forest 14 reports
Himalayan 13 reports

Other hormone or endocrine medicines for cats

Velagliflozin (Senvelgo)4,798 reports · 16% serious Bexagliflozin (Bexacat)4,053 reports · 22% serious Methimazole1,781 reports · 46% serious