Allergic reaction after Methylprednisolone in cats

The FDA has received 36 reports of allergic reaction in cats after Methylprednisolone. That is 2.2% of all reports for this medicine, compared with 0.9% across reports for all cat medicines, so it is reported unusually often with this medicine.

36Reports
42%Marked serious
11%Recovered
53%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
12 57%
1–2 days
0 0.0%
3–7 days
1 4.8%
1–4 weeks
5 24%
Over a month
3 14%

How the animals did

Recovered
4 11%
Still unwell when reported
8 22%
Died
14 39%
Euthanised
5 14%
Not known
5 14%

Problems reported at the same time

Age of the animals

Under 1 year
2
1–3 years
5
4–7 years
13
8–11 years
14
12+ years
1

About this medicine

Type: medicine.

Questions owners ask

Can Methylprednisolone cause allergic reaction in cats?
36 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 the same day 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).

Allergic reaction with similar medicines

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