Reaction profile

The FDA adverse-event record for application site necrosis

77 FDA adverse-event reports reference application site necrosis (VeDDRA 18). See the species, breeds, and drugs most associated with it below.

77
reports citing this reaction
7.8%
death-coded share
Cat
most-affected species
Selamectin
most-associated drug
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77
Total Reports
6
Deaths
7.8%
Death Rate

Species Most Affected

Cat 38
Dog 29
Horse 4
Cattle 4
Human 1
Frog 1

Breeds Most Affected

Domestic Shorthair 25
Dog (unknown) 5
Domestic Mediumhair 4
Cat (unknown) 3
Maltese 2
Cattle (other) 2
Shepherd Dog - German 2
Crossbred Canine/dog 2
Terrier - Yorkshire 2
Domestic Longhair 2

Associated Drugs

Selamectin 16
Imidacloprid + Moxidectin 10
Mirtazapine 6
Emodepside + Praziquantel 4
Bupivacaine Lipsome Injectable Suspension 4
Carprofen 4
Fluralaner Spot-On Solution 4
Ivermectin(1.55%)/Praziquantel(7.75%) Paste 3
Prednisone 3
Enrofloxacin 3
Hydromorphone 3
Flumethrin-Imidacloprid 3
Cefovecin Sodium 3
Selamectin;Sarolaner 3
Sanguinaria Canadensis 2
Cefpodoxime 2
Tramadol 2
Isoflurane 2
Cefazolin 2
Cephalexin 2

Application site necrosis Reaction Insights

77 reports name Application site necrosis; 6 recorded a death outcome (7.8% of reported events, not a population-level mortality rate). VeDDRA code: 18.

By species: Cat (38 reports), Dog (29 reports), Horse (4 reports). By breed: Domestic Shorthair (25), Dog (unknown) (5), Domestic Mediumhair (4).

Most co-reported drugs: Selamectin (16 reports), Imidacloprid + Moxidectin (10 reports), Mirtazapine (6 reports), Emodepside + Praziquantel (4 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.