Hydroxyzine
982 adverse event reports submitted to the FDA
Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
982
Total Reports
38
Deaths Reported
390.0%
Death Rate
Active Ingredients
Hydroxyzine
Administration Routes
OralUnknownOphthalmic
Species Affected
Dog 950
Cat 15
Human 9
Unknown 5
Horse 3
Most Affected Breeds
Retriever - Labrador 94
Shih Tzu 51
Crossbred Canine/dog 49
Terrier - Yorkshire 44
Retriever - Golden 37
Boxer (German Boxer) 32
Terrier - West Highland White 31
Terrier (unspecified) 29
Shepherd Dog - German 28
Chihuahua 28
Most Reported Reactions
Emesis 213
Vomiting 166
Lethargy (see also Central nervous system depression in 'Neurological') 127
Diarrhoea 81
Other abnormal test result NOS 75
Lack of efficacy - NOS 74
Elevated serum alkaline phosphatase (SAP) 46
Elevated alanine aminotransferase (ALT) 42
Seizure NOS 41
Anorexia 41
Behavioural disorder NOS 41
Decreased appetite 37
Outcome Breakdown
Recovered/Normal
423 (43.3%)
Ongoing
309 (31.6%)
Outcome Unknown
170 (17.4%)
Recovered with Sequela
37 (3.8%)
Euthanized
20 (2.0%)
Died
18 (1.8%)
Source: FDA Center for Veterinary Medicine — Adverse Event Reports. Data reflects voluntary submissions and may not represent actual incidence rates.