Megestrol side effects in cats

60 reports sent to the FDA between 1996 and 2026 involve Megestrol in cats. The most reported problems were diabetes mellitus, excessive thirst, diabetes. 3.3% were marked serious.

60Reports
3.3%Marked serious
97%Only medicine involved
0.0%Recovered
22%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

Diabetes mellitus
15 25%
Excessive thirst
8 13%
Diabetes
8 13%
Liver problems
6 10%
Mammary gland neoplasm
6 10%
Mammary hyperplasia
6 10%
Excessive urination
6 10%
Glucosuria
5 8.3%
Hyperglycaemia
5 8.3%
Loss of appetite
5 8.3%
Weight loss
5 8.3%
Lethargy
4 6.7%
Vomiting
3 5.0%
Accidental exposure
3 5.0%
Hind limb paresis
2 3.3%

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 1.7%

How the animals did

Died
11 18%
Euthanised
2 3.3%
Not known
47 78%

Breeds named most often

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

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