Phenylbutazone

131 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.

131

Total Reports

Deaths Reported

1530.0%

Death Rate

Active Ingredients

Phenylbutazone

Administration Routes

UnknownOralIntravenousParenteral

Species Affected

Horse 94

Unknown 30

Dog 4

Other 1

Other Equids 1

Donkey 1

Most Affected Breeds

Unknown 39

Quarter Horse 30

Thoroughbred 11

Horse (unknown) 10

Warmblood (unspecified) 6

Arab 5

Paint 3

Standardbred (unspecified) 3

Tennessee Walking Horse 3

Hanovarian 2

Most Reported Reactions

Colic 17

Injection site swelling 13

Elevated blood urea nitrogen (BUN) 13

Elevated creatinine 13

Lethargy (see also Central nervous system depression in 'Neurological') 10

Death by euthanasia 10

Polyuria 10

Polydipsia 10

Fever 9

Decreased appetite 8

Lameness 7

Tachycardia 7

Outcome Breakdown

Recovered/Normal

36 (35.3%)

Outcome Unknown

35 (34.3%)

Euthanized

11 (10.8%)

Ongoing

9 (8.8%)

Died

9 (8.8%)

Recovered with Sequela

2 (2.0%)

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