Methylprednisolone side effects in horses

100 reports sent to the FDA between 1995 and 2026 involve Methylprednisolone in horses. The most reported problems were swelling, synovitis, collapse. 32% were marked serious.

100Reports
32%Marked serious
60%Only medicine involved
14%Recovered
21%Died or euthanised
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

About this medicine

Type: medicine.

Most reported side effects

21 21%
Synovitis
18 18%
Collapse
16 16%
Joint effusion
16 16%
Allergic reaction
14 14%
Lameness
13 13%
Injection site reaction
13 13%
Wobbliness (ataxia)
10 10%
Arthritis
7 7.0%
Joint pain
7 7.0%
Pale mucous membrane
7 7.0%
Septic arthritis
6 6.0%
Joint inflammation
6 6.0%
Breathing problems
6 6.0%
Bone and joint disorder
4 4.0%

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a horse still getting fleas or heartworm), not about a side effect.

Didn't work as expected
1 1.0%

How soon problems started

Same day
25 50%
1–2 days
9 18%
3–7 days
6 12%
1–4 weeks
9 18%
Over a month
1 2.0%

Time from the first dose to the first sign, where both dates were reported (50 reports).

How the animals did

Recovered
14 14%
Still unwell when reported
8 8.0%
Died
20 20%
Euthanised
1 1.0%
Not known
57 57%

Breeds named most often

Popular breeds appear more often because there are more of them.

Other medicines for horses