Drug profile

The FDA adverse-event record for Thiabendazole + Dexamethasone + Neomycin

139 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Thiabendazole + Dexamethasone + Neomycin. See the species affected, top reactions, and outcomes below.

139
adverse-event reports
5.8%
death-coded share
Dog
most-reported species
31
Emesis - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
139
Total Reports
8
Deaths Reported
5.8%
Death Rate

Active Ingredients

Thiabendazole + Dexamethasone + Neomycin

Administration Routes

Auricular (Otic)UnknownTopicalOral

Species Affected

Dog 85
Cat 53
Ferret 1

Most Affected Breeds

Domestic Shorthair 28
Retriever - Golden 7
Domestic Longhair 7
Maltese 6
Pug 6
Chihuahua 5
Boxer (German Boxer) 4
Shih Tzu 4
Pit Bull 4
Foxhound - American 4

Most Reported Reactions

Emesis 31
Vomiting 21
Lethargy (see also Central nervous system depression in 'Neurological') 20
Behavioural disorder NOS 14
Lack of efficacy - NOS 12
Lethargy (see also Central nervous system depression in Neurological) 11
Other abnormal test result NOS 10
Ear infection NOS 10
Decreased appetite 9
Not eating 8
Diarrhoea 7
Ataxia 7

Outcome Breakdown

Recovered/Normal
60 (43.2%)
Outcome Unknown
34 (24.5%)
Ongoing
34 (24.5%)
Died
6 (4.3%)
Recovered with Sequela
3 (2.2%)
Euthanized
2 (1.4%)

Thiabendazole + Dexamethasone + Neomycin Adverse Event Insights

139 reports name Thiabendazole + Dexamethasone + Neomycin; 8 recorded a death outcome (5.8% of reported events, not a population-level mortality rate). Active ingredient: Thiabendazole + Dexamethasone + Neomycin. Administration routes: Auricular (Otic), Unknown, Topical, Oral.

By species: Dog (85 reports), Cat (53 reports), Ferret (1 reports). By breed: Domestic Shorthair (28), Retriever - Golden (7), Domestic Longhair (7).

Leading clinical signs: Emesis (31), Vomiting (21), Lethargy (see also Central nervous system depression in 'Neurological') (20), Behavioural disorder NOS (14). Outcome, 139 coded reports: Recovered/Normal leads at 43.2%.

Read these counts as reporting volume, not risk: per our methodology, a widely-prescribed drug will rack up more raw FDA reports in a given year than a rarely-used one at an identical true rate, so we recommend comparing within similar-exposure products rather than across the full 2025 catalog.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.