Excessive urination after Methylprednisolone in cats

The FDA has received 41 reports of excessive urination in cats after Methylprednisolone. That is 2.6% of all reports for this medicine, compared with 0.7% across reports for all cat medicines, so it is reported unusually often with this medicine.

41Reports

29%Marked serious

0.0%Recovered

17%Died or euthanised

14 daysTypical onset

How soon it started

Same day

2 12%

1–2 days

3 18%

3–7 days

3 18%

1–4 weeks

4 24%

Over a month

5 29%

How the animals did

Still unwell when reported

11 27%

Died

4 9.8%

Euthanised

3 7.3%

Not known

23 56%

Problems reported at the same time

36 88%

19 46%

16 39%

14 34%

14 34%

7 17%

7 17%

7 17%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Methylprednisolone cause excessive urination in cats?: 41 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 14 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).

All reported side effects of Methylprednisolone in cats · Medicines most reported with excessive urination