Phenylbutazone side effects in horses
149 reports sent to the FDA between 1995 and 2026 involve Phenylbutazone in horses. The most reported problems were swelling, loss of appetite, kidney problems. 45% were marked serious, and where it was recorded, signs eased after stopping the medicine in 75% of cases.
149Reports
45%Marked serious
34%Only medicine involved
28%Recovered
25%Died or euthanised
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About this medicine
Type: medicine.
Most reported side effects
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.
How soon problems started
Time from the first dose to the first sign, where both dates were reported (79 reports).
How the animals did
Breeds named most often
Popular breeds appear more often because there are more of them.
- Quarter Horse 43 reports
- Thoroughbred 17 reports
- Horse 14 reports
- Arab 10 reports
- Warmblood 7 reports
- Standardbred 6 reports
- Miniature 5 reports
- Shetland Pony 3 reports
- Paint 3 reports
- Dutch Warmblood 3 reports
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