FDA ADE reports for Hydroxyzine

ade_hydroxyzine_adverse_events

ade en 2026-07-22

Hydroxyzine — FDA Animal & Veterinary Adverse Event (ADE) Reports

Source: openFDA animalandveterinary/event.json, the FDA Center for Veterinary Medicine (CVM) adverse event report database. Data pulled 2026-07-22. Counts are report-level: one report may list multiple reactions and multiple animals, so figures are not additive and do not imply causation. Hydroxyzine is a active ingredient.

Total reports

Hydroxyzine: 1005

Reports by species (top entries)

Dog 972
Cat 16
Human 9
Horse 3

Top reported reactions (VEDDRA terms, top entries)

Emesis 213
Vomiting 169
Lethargy (see also Central nervous system depression in 'Neurological') 128
Diarrhoea 84
Other abnormal test result NOS 78
Lack of efficacy - NOS 74
Elevated serum alkaline phosphatase (SAP) 45
Behavioural disorder NOS 43
Elevated alanine aminotransferase (ALT) 43
Seizure NOS 42

Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b11.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).

Sources

FDA ADE reports for Hydroxyzine (active ingredient) — total reports, species & reaction breakdown

Source document: FDA FAERS / openFDA Animal & Veterinary Event Reports

US FDA Center for Veterinary Medicine (openFDA animal & veterinary event database)retrieved 2026-07-22

Verification file: pdf-raw/ade/ade_active_ingredients_2026-07-22_b11.json

Link points to the issuing authority's site; a direct document link is still being verified.

Machine access

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Raw JSON ↗ llm.txt OpenAPI