Fentanyl
694 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.
694
Total Reports
147
Deaths Reported
2120.0%
Death Rate
Active Ingredients
Fentanyl
Administration Routes
TransdermalUnknownTopicalIntravenousOtherCutaneousIntramuscularOralIntradermalParenteral
Species Affected
Dog 597
Cat 66
Unknown 12
Human 9
Goat 3
Primate 2
Alpaca 2
Pig 2
Guinea Pig 1
Most Affected Breeds
Dog (unknown) 86
Retriever - Labrador 75
Domestic Shorthair 34
Crossbred Canine/dog 31
Unknown 24
Retriever - Golden 20
Dachshund (unspecified) 18
Chihuahua 18
Pit Bull 18
Boxer (German Boxer) 15
Most Reported Reactions
Anorexia 149
Vocalisation 112
Hypothermia 90
Vomiting 87
Death by euthanasia 87
Lethargy (see also Central nervous system depression in 'Neurological') 86
Sedation 85
Not eating 74
Other abnormal test result NOS 65
Lack of efficacy - NOS 64
Inappetence 62
Diarrhoea 59
Outcome Breakdown
Recovered/Normal
288 (42.4%)
Outcome Unknown
144 (21.2%)
Euthanized
86 (12.6%)
Ongoing
77 (11.3%)
Died
62 (9.1%)
Recovered with Sequela
23 (3.4%)
Source: FDA Center for Veterinary Medicine — Adverse Event Reports. Data reflects voluntary submissions and may not represent actual incidence rates.