Pentobarbital + Phenytoin side effects in horses
125 reports sent to the FDA between 1996 and 2026 involve Pentobarbital + Phenytoin in horses. The most reported problems were seizures, potency, low, restlessness or agitation. 30% were marked serious, and where it was recorded, signs eased after stopping the medicine in 25% of cases.
125Reports
30%Marked serious
98%Only medicine involved
0.8%Recovered
93%Died or euthanised
Sponsored
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 (38 reports).
How the animals did
Breeds named most often
Popular breeds appear more often because there are more of them.
- Horse 55 reports
- Quarter Horse 16 reports
- Thoroughbred 5 reports
- Appaloosa 4 reports
- Shetland Pony 3 reports
- Paint 3 reports
- Pony Of The Americas 2 reports
- Arab 2 reports
- Pony 2 reports
- Shire 1 reports
Other medicines for horses
Omeprazole1,939 reports · 16% seriousPergolide1,236 reports · 34% seriousCeftiofur1,214 reports · 38% seriousDetomidine991 reports · 33% seriousFlunixin Meglumine622 reports · 40% seriousKetamine567 reports · 22% seriousPolysulfated Glycosaminoglycan516 reports · 30% seriousXylazine465 reports · 33% serious