Chlorpheniramine
186 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.
186
Total Reports
20
Deaths Reported
1080.0%
Death Rate
Active Ingredients
Chlorpheniramine
Administration Routes
OralUnknownTransdermalTopicalSubcutaneous
Species Affected
Dog 132
Cat 54
Most Affected Breeds
Domestic Shorthair 43
Chihuahua 12
Maltese 12
Retriever - Labrador 9
Terrier - Yorkshire 7
Retriever - Golden 6
Shepherd Dog - German 6
Boxer (German Boxer) 5
Domestic Longhair 4
Lhasa Apso 4
Most Reported Reactions
Vomiting 28
Lethargy (see also Central nervous system depression in 'Neurological') 23
Other abnormal test result NOS 18
Diarrhoea 17
Anaemia NOS 15
Emesis 14
Weight loss 12
Decreased appetite 11
Death by euthanasia 10
Anorexia 10
Inappetence 9
Seizure NOS 9
Outcome Breakdown
Ongoing
79 (42.5%)
Recovered/Normal
61 (32.8%)
Outcome Unknown
26 (14.0%)
Died
10 (5.4%)
Euthanized
10 (5.4%)
Source: FDA Center for Veterinary Medicine — Adverse Event Reports. Data reflects voluntary submissions and may not represent actual incidence rates.