Reaction profile

The FDA adverse-event record for reddening of the skin

3,939 FDA adverse-event reports reference reddening of the skin (VeDDRA 946). See the species, breeds, and drugs most associated with it below.

3,939
reports citing this reaction
2.3%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
3,939
Total Reports
90
Deaths
2.3%
Death Rate

Species Most Affected

Dog 3,447
Cat 344
Human 113
Horse 11
Cattle 9
Pig 7
Wolf 3
Other Canids 2
Unknown 1
Hamster 1

Breeds Most Affected

Retriever - Labrador 248
Crossbred Canine/dog 221
Domestic Shorthair 218
Chihuahua 194
Terrier - Yorkshire 167
Shih Tzu 137
Terrier - Bull - American Pit 133
Unknown 120
Pit Bull 119
Shepherd Dog - German 105

Associated Drugs

Milbemycin Oxime + Spinosad 762
Moxidectin 437
Afoxolaner 303
Spinosad 244
Oclacitinib Maleate 219
Pyrantel Pamoate;Sarolaner 139
Fluralaner Chew Tablets 118
Ivermectin + Pyrantel As Pamoate Salt 114
Selamectin 112
Anti-Il31 Mab Mcs Lot #1283563 106
Nitenpyram 105
Carprofen 97
Milbemycin Oxime + Praziquantel 96
Prednisone 93
Sarolaner 92
Fluralaner 13.64% 12-Week Chew 91
Maropitant Citrate 87
Cefovecin 84
Leptospira Canicola L-15 Strain C-51;Leptospira Grippotyphosa 1550 Lot 10005 Str 82
Frunevetmab 77

Reddening of the skin Reaction Insights

3,939 reports name Reddening of the skin; 90 recorded a death outcome (2.3% of reported events, not a population-level mortality rate). VeDDRA code: 946.

By species: Dog (3,447 reports), Cat (344 reports), Human (113 reports). By breed: Retriever - Labrador (248), Crossbred Canine/dog (221), Domestic Shorthair (218).

Most co-reported drugs: Milbemycin Oxime + Spinosad (762 reports), Moxidectin (437 reports), Afoxolaner (303 reports), Spinosad (244 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.