Reaction profile

The FDA adverse-event record for injection site nodule

92 FDA adverse-event reports reference injection site nodule (VeDDRA 2605). See the species, breeds, and drugs most associated with it below.

92
reports citing this reaction
1.1%
death-coded share
Dog
most-affected species
Melarsomine Dihydrochloride
most-associated drug
Verify with FDA CVM →
92
Total Reports
1
Deaths
1.1%
Death Rate

Species Most Affected

Dog 75
Cat 6
Mouse 3
Horse 3
Human 2
Cattle 2
Goat 1

Breeds Most Affected

Retriever - Labrador 13
Shepherd Dog - German 6
Terrier - Bull - American Pit 5
Boxer (German Boxer) 5
Crossbred Canine/dog 4
Domestic Shorthair 4
Pit Bull 4
Chihuahua 3
Deutsche Dogge, Great Dane 3
Laboratory mouse 3

Associated Drugs

Melarsomine Dihydrochloride 28
Tigilanol Tiglate 16
Moxidectin 13
Prednisone 7
Carprofen 5
Bedinvetmab 5
Milbemycin Oxime + Spinosad 4
Famotidine 4
Dexmedetomidine 4
Ivermectin + Pyrantel As Pamoate Salt 3
Cefovecin 3
Rabies Virus,Pv-11,Killed 3
Buprenorphine 3
Atipamezole 3
Diphenhydramine 3
Butorphanol Tartrate 3
Anti-Il31 Mab Mcs Lot #1283563 3
Afoxolaner 2
Recombitek C8 - 47K9.R0 2
Enrofloxacin 2

Injection site nodule Reaction Insights

92 reports name Injection site nodule; 1 recorded a death outcome (1.1% of reported events, not a population-level mortality rate). VeDDRA code: 2605.

By species: Dog (75 reports), Cat (6 reports), Mouse (3 reports). By breed: Retriever - Labrador (13), Shepherd Dog - German (6), Terrier - Bull - American Pit (5).

Most co-reported drugs: Melarsomine Dihydrochloride (28 reports), Tigilanol Tiglate (16 reports), Moxidectin (13 reports), Prednisone (7 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.