Phenobarbital side effects in dogs
1,544 reports sent to the FDA between 1999 and 2026 involve Phenobarbital in dogs. The most reported problems were seizures, vomiting, lethargy. 60% were marked serious, and where it was recorded, signs eased after stopping the medicine in 100% of cases.
1,544Reports
60%Marked serious
2.4%Only medicine involved
35%Recovered
12%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 dog 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 (902 reports).
How the animals did
Breeds named most often
Popular breeds appear more often because there are more of them.
- Labrador Retriever 92 reports
- Chihuahua 67 reports
- German Shepherd Dog 48 reports
- Golden Retriever 45 reports
- Australian Shepherd Dog 45 reports
- Beagle 38 reports
- Yorkshire Terrier 36 reports
- Dachshund 35 reports
- Siberian Husky 32 reports
- Shih Tzu 30 reports
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