Antihistamine (Unknown)
129 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.
129
Total Reports
4
Deaths Reported
310.0%
Death Rate
Active Ingredients
Antihistamine (Unknown)
Administration Routes
OralUnknownIntramuscularSubcutaneousParenteral
Species Affected
Dog 122
Cat 3
Human 2
Cattle 1
Unknown 1
Most Affected Breeds
Chihuahua 10
Shih Tzu 8
Crossbred Canine/dog 7
Retriever - Labrador 7
Retriever - Golden 6
Bichon Frise 5
Beagle 5
Bulldog 4
Boxer (German Boxer) 4
Schnauzer - Miniature 4
Most Reported Reactions
Emesis 50
Vomiting 17
Lethargy (see also Central nervous system depression in 'Neurological') 15
Lack of efficacy (ectoparasite) - flea 11
Lack of efficacy - NOS 9
Other abnormal test result NOS 9
Diarrhoea 6
Elevated alanine aminotransferase (ALT) 6
Cough 4
Neutrophilia 4
Scratching 4
Seizure NOS 4
Outcome Breakdown
Recovered/Normal
67 (52.3%)
Outcome Unknown
39 (30.5%)
Recovered with Sequela
13 (10.2%)
Ongoing
5 (3.9%)
Died
3 (2.3%)
Euthanized
1 (0.8%)
Source: FDA Center for Veterinary Medicine — Adverse Event Reports. Data reflects voluntary submissions and may not represent actual incidence rates.