Drug profile

The FDA adverse-event record for Thyroid Tabs

21 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Thyroid Tabs. See the species affected, top reactions, and outcomes below.

21
adverse-event reports
19.0%
death-coded share
Dog
most-reported species
5
Decreased appetite - 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.
21
Total Reports
4
Deaths Reported
19.0%
Death Rate

Active Ingredients

Thyroid Tabs

Administration Routes

UnknownOral

Species Affected

Dog 21

Most Affected Breeds

Retriever - Labrador 4
Siberian Husky 2
Boxer (German Boxer) 2
Shepherd Dog - Australian 2
American Pit Bull Terrier 1
Dachshund - Miniature 1
Spaniel - Cocker American 1
Shepherd Dog - German 1
Poodle - Standard 1
Cattle Dog - Australian (blue heeler, red heeler, Queensland cattledog) 1

Most Reported Reactions

Decreased appetite 5
Weight loss 4
Limb weakness 3
Vomiting 3
Seizure NOS 3
Death 3
INEFFECTIVE, CUSHINGS 2
Diarrhoea 2
Urinary tract infection 2
Difficulty standing 2
Faecal incontinence 2
Lethargy (see also Central nervous system depression in Neurological) 2

Outcome Breakdown

Ongoing
11 (52.4%)
Outcome Unknown
3 (14.3%)
Recovered/Normal
3 (14.3%)
Died
3 (14.3%)
Euthanized
1 (4.8%)

Thyroid Tabs Adverse Event Insights

21 reports name Thyroid Tabs; 4 recorded a death outcome (19.0% of reported events, not a population-level mortality rate). Active ingredient: Thyroid Tabs. Administration routes: Unknown, Oral.

By species: Dog (21 reports). By breed: Retriever - Labrador (4), Siberian Husky (2), Boxer (German Boxer) (2).

Leading clinical signs: Decreased appetite (5), Weight loss (4), Limb weakness (3), Vomiting (3). Outcome, 21 coded reports: Ongoing leads at 52.4%.

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.