Antihistamines
119 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.
119
Total Reports
7
Deaths Reported
590.0%
Death Rate
Active Ingredients
Antihistamines
Administration Routes
UnknownOral
Species Affected
Dog 108
Cat 11
Most Affected Breeds
Retriever - Labrador 13
Terrier - Bull - American Pit 10
Terrier - Yorkshire 8
Bulldog 7
Domestic Shorthair 6
Shepherd Dog - German 5
Terrier (unspecified) 5
Chihuahua 4
Crossbred Canine/dog 4
Bichon Frise 3
Most Reported Reactions
Vomiting 19
Lack of efficacy - NOS 17
INEFFECTIVE, ATOPY CONTROL 12
Diarrhoea 11
Lethargy (see also Central nervous system depression in 'Neurological') 11
Seizure NOS 7
Elevated serum alkaline phosphatase (SAP) 7
Behavioural disorder NOS 6
Other abnormal test result NOS 6
Erythema (for urticaria see Immune SOC) 6
Death by euthanasia 5
Polyuria 5
Outcome Breakdown
Ongoing
82 (68.9%)
Outcome Unknown
21 (17.6%)
Recovered/Normal
9 (7.6%)
Euthanized
5 (4.2%)
Died
2 (1.7%)
Source: FDA Center for Veterinary Medicine — Adverse Event Reports. Data reflects voluntary submissions and may not represent actual incidence rates.