Hydroxyzine side effects in dogs
1,034 reports sent to the FDA between 2001 and 2026 involve Hydroxyzine in dogs. The most reported problems were vomiting, lethargy, loss of appetite. 31% were marked serious, and where it was recorded, signs eased after stopping the medicine in 33% of cases.
1,034Reports
31%Marked serious
0.3%Only medicine involved
47%Recovered
4.0%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 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 (637 reports).
How the animals did
Breeds named most often
Popular breeds appear more often because there are more of them.
- Labrador Retriever 74 reports
- Shih Tzu 53 reports
- Yorkshire Terrier 41 reports
- Golden Retriever 30 reports
- West Highland White Terrier 29 reports
- French Bulldog 28 reports
- Boxer (german Boxer) 28 reports
- Pug 27 reports
- Australian Shepherd Dog 22 reports
- German Shepherd Dog 20 reports
Other medicines for dogs
Melarsomine (Immiticide)22,672 reports · 41% seriousPolysulfated Glycosaminoglycan5,465 reports · 33% seriousDiphenhydramine4,724 reports · 48% seriousButorphanol4,441 reports · 55% seriousCefpodoxime4,055 reports · 36% seriousTramadol3,768 reports · 47% seriousFlorfenicol + Mometasone + Terbinafine3,542 reports · 60% seriousDesoxycorticosterone Pivalate3,337 reports · 38% serious