Behaviour change after Methylprednisolone in cats

109 reports to the FDA describe behaviour change in cats given Methylprednisolone. That is 6.8% of all reports for this medicine, compared with 5.4% across reports for all cat medicines.

109Reports
44%Marked serious
19%Recovered
9.2%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
31 36%
1–2 days
12 14%
3–7 days
13 15%
1–4 weeks
14 16%
Over a month
16 19%

How the animals did

Recovered
21 19%
Still unwell when reported
36 33%
Died
5 4.6%
Euthanised
5 4.6%
Not known
42 39%

Problems reported at the same time

Age of the animals

Under 1 year
1
1–3 years
23
4–7 years
37
8–11 years
23
12+ years
22

About this medicine

Type: medicine.

Questions owners ask

Can Methylprednisolone cause behaviour change in cats?
109 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 3 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).

Behaviour change with similar medicines

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