Drug profile

The FDA adverse-event record for Probiotic (Unknown)

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

405
adverse-event reports
5.9%
death-coded share
Dog
most-reported species
97
Vomiting - 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.
405
Total Reports
24
Deaths Reported
5.9%
Death Rate

Active Ingredients

Probiotic (Unknown)

Administration Routes

UnknownOralOtherIntraocular

Species Affected

Dog 329
Cat 64
Human 7
Cattle 2
Chicken 2
Unknown 1

Most Affected Breeds

Retriever - Labrador 40
Domestic Shorthair 40
Retriever - Golden 22
Crossbred Canine/dog 18
Shih Tzu 14
Pit Bull 12
Boxer (German Boxer) 11
Terrier - Yorkshire 11
Siberian Husky 9
Chihuahua 8

Most Reported Reactions

Vomiting 97
Diarrhoea 91
Lethargy (see also Central nervous system depression in 'Neurological') 48
Emesis 44
Weight loss 33
Other abnormal test result NOS 29
Not eating 29
Lack of efficacy - NOS 25
Lack of efficacy (endoparasite) - hookworm 23
Decreased appetite 22
Bloody diarrhoea 21
Lethargy (see also Central nervous system depression in Neurological) 20

Outcome Breakdown

Recovered/Normal
144 (35.2%)
Outcome Unknown
132 (32.3%)
Ongoing
103 (25.2%)
Euthanized
12 (2.9%)
Died
12 (2.9%)
Recovered with Sequela
6 (1.5%)

Probiotic (Unknown) Adverse Event Insights

405 reports name Probiotic (Unknown); 24 recorded a death outcome (5.9% of reported events, not a population-level mortality rate). Active ingredient: Probiotic (Unknown). Administration routes: Unknown, Oral, Other, Intraocular.

By species: Dog (329 reports), Cat (64 reports), Human (7 reports). By breed: Retriever - Labrador (40), Domestic Shorthair (40), Retriever - Golden (22).

Leading clinical signs: Vomiting (97), Diarrhoea (91), Lethargy (see also Central nervous system depression in 'Neurological') (48), Emesis (44). Outcome, 409 coded reports: Recovered/Normal leads at 35.2%.

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.