Drug profile

The FDA adverse-event record for Probiotic (Unspecified)

171 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Probiotic (Unspecified). See the species affected, top reactions, and outcomes below.

171
adverse-event reports
11.7%
death-coded share
Dog
most-reported species
58
Diarrhoea - 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.
171
Total Reports
20
Deaths Reported
11.7%
Death Rate

Active Ingredients

Probiotic (Unspecified)

Administration Routes

UnknownOral

Species Affected

Dog 148
Cat 20
Cattle 1
Unknown 1
Human 1

Most Affected Breeds

Retriever - Labrador 16
Domestic Shorthair 13
Terrier - Yorkshire 8
Shepherd Dog - German 6
Shih Tzu 6
Retriever - Golden 5
Collie - Border 5
Boxer (German Boxer) 5
Terrier - Bull - American Pit 4
Pug 4

Most Reported Reactions

Diarrhoea 58
Vomiting 52
Lethargy (see also Central nervous system depression in 'Neurological') 51
Anorexia 24
Lack of efficacy - NOS 15
Weight loss 15
Death by euthanasia 13
Other abnormal test result NOS 13
Behavioural disorder NOS 11
Decreased appetite 11
Elevated liver enzymes 10
Elevated alanine aminotransferase (ALT) 10

Outcome Breakdown

Ongoing
94 (55.3%)
Outcome Unknown
35 (20.6%)
Recovered/Normal
21 (12.4%)
Euthanized
13 (7.6%)
Died
7 (4.1%)

Probiotic (Unspecified) Adverse Event Insights

171 reports name Probiotic (Unspecified); 20 recorded a death outcome (11.7% of reported events, not a population-level mortality rate). Active ingredient: Probiotic (Unspecified). Administration routes: Unknown, Oral.

By species: Dog (148 reports), Cat (20 reports), Cattle (1 reports). By breed: Retriever - Labrador (16), Domestic Shorthair (13), Terrier - Yorkshire (8).

Leading clinical signs: Diarrhoea (58), Vomiting (52), Lethargy (see also Central nervous system depression in 'Neurological') (51), Anorexia (24). Outcome, 170 coded reports: Ongoing leads at 55.3%.

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.