Benadryl side effects in dogs
241 reports sent to the FDA between 2012 and 2026 involve Benadryl in dogs. The most reported problems were vomiting, lethargy, loss of appetite. 80% were marked serious, and where it was recorded, signs eased after stopping the medicine in 0% of cases.
241Reports
80%Marked serious
0.0%Only medicine involved
16%Recovered
13%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 (211 reports).
How the animals did
Breeds named most often
Popular breeds appear more often because there are more of them.
- Labrador Retriever 14 reports
- Boston Terrier 10 reports
- Chihuahua 9 reports
- Boxer (german Boxer) 9 reports
- Dachshund 8 reports
- Shih Tzu 7 reports
- German Shepherd Dog 7 reports
- French Bulldog 6 reports
- Welsh Pembroke Corgi 6 reports
- Siberian Husky 5 reports
Other medicines for dogs
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