Dehydration after Methylprednisolone in cats

The FDA has received 62 reports of dehydration in cats after Methylprednisolone. That is 3.9% of all reports for this medicine, compared with 2.0% across reports for all cat medicines, so it is reported unusually often with this medicine.

62Reports
65%Marked serious
8.1%Recovered
42%Died or euthanised
4 daysTypical onset
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How soon it started

Same day
6 13%
1–2 days
13 28%
3–7 days
8 17%
1–4 weeks
12 26%
Over a month
8 17%

How the animals did

Recovered
5 8.1%
Still unwell when reported
17 27%
Died
13 21%
Euthanised
13 21%
Not known
14 23%

Problems reported at the same time

Age of the animals

Under 1 year
3
1–3 years
8
4–7 years
21
8–11 years
12
12+ years
15

About this medicine

Type: medicine.

Questions owners ask

Can Methylprednisolone cause dehydration in cats?
62 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 4 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).

Dehydration with similar medicines

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