Abnormal ultrasound finding after Methylprednisolone in cats

The FDA has received 28 reports of abnormal ultrasound finding in cats after Methylprednisolone. That is 1.7% of all reports for this medicine, compared with 0.5% across reports for all cat medicines, so it is reported unusually often with this medicine.

28Reports

57%Marked serious

3.6%Recovered

50%Died or euthanised

4 daysTypical onset

How soon it started

Same day

4 22%

1–2 days

3 17%

3–7 days

5 28%

1–4 weeks

3 17%

Over a month

3 17%

How the animals did

Recovered

1 3.6%

Still unwell when reported

9 32%

Died

7 25%

Euthanised

7 25%

Not known

4 14%

Problems reported at the same time

21 75%

15 54%

14 50%

13 46%

13 46%

Abnormal radiograph finding

10 36%

Blood problems

9 32%

Breathing problems

9 32%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Methylprednisolone cause abnormal ultrasound finding in cats?: 28 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).

Abnormal ultrasound finding with similar medicines

Abnormal ultrasound finding after Butorphanol 28 reports · 1.2% of its reports
Abnormal ultrasound finding after Ampicillin 25 reports · 8.3% of its reports
Abnormal ultrasound finding after Ondansetron 21 reports · 9.6% of its reports

All reported side effects of Methylprednisolone in cats · Medicines most reported with abnormal ultrasound finding