Drug profile

The FDA adverse-event record for Prescription Diet (Unknown)

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

338
adverse-event reports
4.1%
death-coded share
Dog
most-reported species
108
Emesis - 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.
338
Total Reports
14
Deaths Reported
4.1%
Death Rate

Active Ingredients

Prescription Diet (Unknown)

Administration Routes

OralUnknown

Species Affected

Dog 257
Cat 80
Pig 1

Most Affected Breeds

Domestic Shorthair 43
Crossbred Canine/dog 17
Terrier - Yorkshire 16
Retriever - Labrador 16
Chihuahua 14
Retriever - Golden 13
Shih Tzu 11
Domestic Longhair 11
Maltese 10
Dachshund (unspecified) 10

Most Reported Reactions

Emesis 108
Vomiting 46
Diarrhoea 37
Lack of efficacy - NOS 32
Lethargy (see also Central nervous system depression in 'Neurological') 29
Not eating 23
Weight loss 21
Other abnormal test result NOS 20
Ketosis 18
Decreased appetite 17
Lack of efficacy (ectoparasite) - flea 15
Behavioural disorder NOS 13

Outcome Breakdown

Recovered/Normal
156 (46.2%)
Outcome Unknown
78 (23.1%)
Ongoing
63 (18.6%)
Recovered with Sequela
27 (8.0%)
Died
7 (2.1%)
Euthanized
7 (2.1%)

Prescription Diet (Unknown) Adverse Event Insights

338 reports name Prescription Diet (Unknown); 14 recorded a death outcome (4.1% of reported events, not a population-level mortality rate). Active ingredient: Prescription Diet (Unknown). Administration routes: Oral, Unknown.

By species: Dog (257 reports), Cat (80 reports), Pig (1 reports). By breed: Domestic Shorthair (43), Crossbred Canine/dog (17), Terrier - Yorkshire (16).

Leading clinical signs: Emesis (108), Vomiting (46), Diarrhoea (37), Lack of efficacy - NOS (32). Outcome, 338 coded reports: Recovered/Normal leads at 46.2%.

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.