Butorphenol

16 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.

Total Reports

Deaths Reported

1250.0%

Death Rate

Active Ingredients

Butorphenol

Administration Routes

UnknownIntramuscularIntravenous

Species Affected

Dog 12

Cat 3

Horse 1

Most Affected Breeds

Crossbred Canine/dog 2

Retriever - Labrador 2

Terrier - Jack Russell 2

Shepherd Dog - German 2

Domestic Shorthair 2

Beagle 2

Hound (unspecified) 1

Quarter Horse 1

Shepherd Dog - Australian 1

Cat (other) 1

Most Reported Reactions

Vomiting 4

Anorexia 3

Lethargy (see also Central nervous system depression in 'Neurological') 3

Seizure NOS 3

Lethargy (see also Central nervous system depression in Neurological) 3

Tense abdomen 2

Diarrhoea 2

Shaking 2

Ataxia 2

Horner's syndrome 2

Head tilt - neurological disorder (see also Head tilt - ear disorder) 2

Skin lesion NOS 2

Outcome Breakdown

Ongoing

10 (58.8%)

Outcome Unknown

3 (17.6%)

Euthanized

2 (11.8%)

Recovered/Normal

2 (11.8%)

Source: FDA Center for Veterinary Medicine — Adverse Event Reports. Data reflects voluntary submissions and may not represent actual incidence rates.