Levothyroxin
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.
16
Total Reports
6
Deaths Reported
3750.0%
Death Rate
Active Ingredients
Levothyroxin
Administration Routes
OralUnknown
Species Affected
Dog 16
Most Affected Breeds
Crossbred Canine/dog 3
Shepherd Dog - German 2
Boxer (German Boxer) 2
Dog (other) 1
Retriever - Labrador 1
Poodle - Miniature 1
Shih Tzu 1
Akita 1
Terrier - Bull - American Pit 1
Chihuahua 1
Most Reported Reactions
Seizure NOS 3
Death by euthanasia 3
Diarrhoea 2
Vomiting 2
Polyuria 2
Polydipsia 2
Inappropriate urination 2
Not eating 2
Dehydration 2
Behavioural disorder NOS 2
Difficulty standing 2
Balance problem 2
Outcome Breakdown
Ongoing
7 (43.8%)
Died
3 (18.8%)
Euthanized
3 (18.8%)
Recovered/Normal
2 (12.5%)
Outcome Unknown
1 (6.3%)
Source: FDA Center for Veterinary Medicine — Adverse Event Reports. Data reflects voluntary submissions and may not represent actual incidence rates.