Blood problems after Methylprednisolone in cats

103 reports to the FDA describe blood problems in cats given Methylprednisolone. That is 6.4% 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.

103Reports
63%Marked serious
6.8%Recovered
44%Died or euthanised
8 daysTypical onset
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How soon it started

Same day
14 19%
1–2 days
10 14%
3–7 days
13 18%
1–4 weeks
27 36%
Over a month
10 14%

How the animals did

Recovered
7 6.8%
Still unwell when reported
33 32%
Died
17 17%
Euthanised
28 27%
Not known
18 17%

Problems reported at the same time

Age of the animals

Under 1 year
3
1–3 years
18
4–7 years
28
8–11 years
28
12+ years
24

About this medicine

Type: medicine.

Questions owners ask

Can Methylprednisolone cause blood problems in cats?
103 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 8 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).

Blood problems with similar medicines

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