Onsior

162 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.

162

Total Reports

Deaths Reported

2530.0%

Death Rate

Active Ingredients

Onsior

Administration Routes

UnknownOralSubcutaneousIntravenous

Species Affected

Cat 158

Dog 4

Most Affected Breeds

Domestic Shorthair 85

Cat (unknown) 22

Domestic Longhair 13

Cat (other) 10

Siamese 6

Domestic Mediumhair 6

Himalayan 5

Russian 2

Ragdoll 2

Dachshund (unspecified) 2

Most Reported Reactions

Lethargy (see also Central nervous system depression in Neurological) 28

Not eating 24

Death by euthanasia 24

Fever 20

Ataxia 18

Death 17

Weight loss 16

Leucocytosis NOS 13

Not drinking 13

Vomiting 13

Vocalisation 12

Dilated pupils 12

Outcome Breakdown

Ongoing

96 (59.3%)

Euthanized

24 (14.8%)

Died

17 (10.5%)

Outcome Unknown

14 (8.6%)

Recovered/Normal

10 (6.2%)

Recovered with Sequela

1 (0.6%)

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