Drug profile

The FDA adverse-event record for Allergy Shot (Unknown)

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

254
adverse-event reports
1.6%
death-coded share
Dog
most-reported species
67
Emesis - top reaction
Verify with FDA CVM →
Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
254
Total Reports
4
Deaths Reported
1.6%
Death Rate

Active Ingredients

Allergy Shot (Unknown)

Administration Routes

UnknownParenteralSubcutaneousOtherOral

Species Affected

Dog 238
Cat 15
Other Canids 1

Most Affected Breeds

Retriever - Labrador 21
Terrier - Yorkshire 15
Pit Bull 12
Shih Tzu 11
Crossbred Canine/dog 11
Chihuahua 10
Retriever - Golden 10
Boxer (German Boxer) 8
Maltese 8
Terrier - West Highland White 7

Most Reported Reactions

Emesis 67
Vomiting 46
Lethargy (see also Central nervous system depression in 'Neurological') 40
Lack of efficacy (ectoparasite) - flea 24
Lack of efficacy - NOS 23
Diarrhoea 17
Emesis (multiple) 11
Weight loss 10
Decreased appetite 10
Not eating 10
Other abnormal test result NOS 9
Reddening of the skin 9

Outcome Breakdown

Recovered/Normal
116 (45.7%)
Outcome Unknown
76 (29.9%)
Ongoing
36 (14.2%)
Recovered with Sequela
22 (8.7%)
Died
3 (1.2%)
Euthanized
1 (0.4%)

Allergy Shot (Unknown) Adverse Event Insights

254 reports name Allergy Shot (Unknown); 4 recorded a death outcome (1.6% of reported events, not a population-level mortality rate). Active ingredient: Allergy Shot (Unknown). Administration routes: Unknown, Parenteral, Subcutaneous, Other.

By species: Dog (238 reports), Cat (15 reports), Other Canids (1 reports). By breed: Retriever - Labrador (21), Terrier - Yorkshire (15), Pit Bull (12).

Leading clinical signs: Emesis (67), Vomiting (46), Lethargy (see also Central nervous system depression in 'Neurological') (40), Lack of efficacy (ectoparasite) - flea (24). Outcome, 254 coded reports: Recovered/Normal leads at 45.7%.

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.