Reaction profile

The FDA adverse-event record for chemosis

122 FDA adverse-event reports reference chemosis (VeDDRA 1107). See the species, breeds, and drugs most associated with it below.

122
reports citing this reaction
4.1%
death-coded share
Dog
most-affected species
Maropitant Citrate
most-associated drug
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122
Total Reports
5
Deaths
4.1%
Death Rate

Species Most Affected

Dog 95
Cat 24
Horse 2
Human 1

Breeds Most Affected

Domestic Shorthair 14
Retriever - Labrador 8
Chihuahua 8
Retriever - Golden 8
Boxer (German Boxer) 5
Siberian Husky 5
Shepherd Dog - German 4
Shih Tzu 3
Hound - Basset 3
Doberman Pinscher 3

Associated Drugs

Maropitant Citrate 19
Prednisone 15
Carprofen 10
Moxidectin 10
Ofloxacin 9
Florfenicol + Mometasone Furoate + Terbinafine Hydrochloride 9
Meloxicam 8
Oclacitinib Maleate 6
Tobramycin 6
Gabapentin 5
Dexmedetomidine Hydrochloride 5
Dexamethasone Sodium Phosphate 5
Anti-Il31 Mab Mcs Lot #1283563 5
Diphenhydramine 5
Aminiotic Fluid 5
Artificial Tears 5
Bedinvetmab 5
Imidacloprid + Moxidectin 4
Doxycycline 4
Diphenhydramine Hcl 4

Chemosis Reaction Insights

122 reports name Chemosis; 5 recorded a death outcome (4.1% of reported events, not a population-level mortality rate). VeDDRA code: 1107.

By species: Dog (95 reports), Cat (24 reports), Horse (2 reports). By breed: Domestic Shorthair (14), Retriever - Labrador (8), Chihuahua (8).

Most co-reported drugs: Maropitant Citrate (19 reports), Prednisone (15 reports), Carprofen (10 reports), Moxidectin (10 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.