Swelling after Methylprednisolone in cats

The FDA has received 119 reports of swelling in cats after Methylprednisolone. That is 7.4% of all reports for this medicine, compared with 1.9% across reports for all cat medicines, so it is reported unusually often with this medicine.

119Reports
46%Marked serious
7.6%Recovered
38%Died or euthanised
5 daysTypical onset
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How soon it started

Same day
14 21%
1–2 days
9 13%
3–7 days
19 28%
1–4 weeks
19 28%
Over a month
6 9.0%

How the animals did

Recovered
9 7.6%
Still unwell when reported
32 27%
Died
33 28%
Euthanised
12 10%
Not known
33 28%

Problems reported at the same time

Age of the animals

Under 1 year
3
1–3 years
20
4–7 years
33
8–11 years
35
12+ years
22

About this medicine

Type: medicine.

Questions owners ask

Can Methylprednisolone cause swelling in cats?
119 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 5 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).

Swelling with similar medicines

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