Reaction profile

The FDA adverse-event record for injection site warmth

247 FDA adverse-event reports reference injection site warmth (VeDDRA 1556). See the species, breeds, and drugs most associated with it below.

247
reports citing this reaction
4.5%
death-coded share
Dog
most-affected species
Ceftiofur Crystalline Free Acid
most-associated drug
Verify with FDA CVM →
247
Total Reports
11
Deaths
4.5%
Death Rate

Species Most Affected

Dog 139
Horse 81
Human 9
Cattle 7
Cat 6
Donkey 2
Other Birds 1
Other Equids 1
Pig 1

Breeds Most Affected

Quarter Horse 24
Thoroughbred 18
Retriever - Labrador 17
Unknown 11
Crossbred Canine/dog 11
Warmblood (unspecified) 9
Pit Bull 9
Horse (unknown) 6
Retriever - Golden 6
Boxer (German Boxer) 6

Associated Drugs

Ceftiofur Crystalline Free Acid 53
Melarsomine Dihydrochloride 39
Polysulfated Glycosaminoglycan 23
Tigilanol Tiglate 21
Melarsomine Dihydrochloride Injection 19
Carprofen 16
Prednisone 14
Gabapentin 13
Diphenhydramine 9
Bedinvetmab 9
Moxidectin 8
Ivermectin + Pyrantel As Pamoate Salt 8
Meloxicam 8
Atipamezole 7
Dexmedetomidine 6
Clodronate Disodium 5
Maropitant Citrate 4
Hyaluronate Sodium 4
Afoxolaner 4
Dexamethasone 4

Injection site warmth Reaction Insights

247 reports name Injection site warmth; 11 recorded a death outcome (4.5% of reported events, not a population-level mortality rate). VeDDRA code: 1556.

By species: Dog (139 reports), Horse (81 reports), Human (9 reports). By breed: Quarter Horse (24), Thoroughbred (18), Retriever - Labrador (17).

Most co-reported drugs: Ceftiofur Crystalline Free Acid (53 reports), Melarsomine Dihydrochloride (39 reports), Polysulfated Glycosaminoglycan (23 reports), Tigilanol Tiglate (21 reports).

Read these counts as reporting volume, not risk: per our methodology, co-reporting reflects temporal association captured in voluntary submissions, not proof that a drug caused this reaction. A widely-prescribed drug will rack up more raw co-reports at an identical true rate than a rarely-used one, so compare within similar-exposure products.

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.