Pet Recall Facts

Ingredients / Metronidazole

Metronidazole: FDA adverse event reports for pets

Reports received through June 26, 2026. Data and limitations.

3,648Total reports
3,047Dog reports
387Cat reports

FDA-approved products with this ingredient (Green Book)

All approved products with this ingredient, for any species.

Brand names come only from the Green Book. Brand names in FDA's public report data are masked, so counts cannot be attributed to any brand. Ingredient names in the reports are written many ways; we group them under one ingredient name and count each report once per ingredient (method).

Reports by year received

19983
19991
20003
20017
20025
20032
20047
20051
20062
20082
20092
20103
201122
2012182
2013258
2014113
2015129
2016296
2017241
2018240
2019201
2020186
2021179
2022150
2023255
2024479
2025490
2026189

Species named in reports

Dog3,047
Cat387
Not given196
Horse8
Human4
Ferret2
Chinchilla1
Rabbit1

Signs reported after Metronidazole

Diarrhoea1,016
Vomiting926
Lethargy (see also Central nervous system depression in Neurological)836
Anorexia414
Other abnormal test result NOS406
Death by euthanasia396
Elevated alanine aminotransferase (ALT)361
Not eating329
Weight loss321
Bloody diarrhoea310
Death266
Decreased appetite252
Elevated serum alkaline phosphatase (SAP)248
Emesis244
Lack of efficacy - NOS222
Leucocytosis NOS202
Abnormal ultrasound finding196
Dehydration190
Elevated total bilirubin187
Abnormal radiograph finding185
Anaemia NOS182
Elevated blood urea nitrogen (BUN)173
Fever171
Behavioural disorder NOS169
Loose stool167

Breeds named in reports

Retriever - Labrador393
Dog (unknown)337
Domestic Shorthair240
Crossbred Canine/dog186
Retriever - Golden164
Poodle (unspecified)153
Shepherd Dog - German142
Terrier - Yorkshire142
Shih Tzu103
Chihuahua91
Terrier - Bull - American Pit73
Boxer (German Boxer)67
Maltese60
Terrier (unspecified)60
Bulldog - French60

Reported outcomes

Ongoing1,257
Recovered/Normal810
Outcome Unknown649
Euthanized395
Died290
Recovered with Sequela35

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