Reaction profile

The FDA adverse-event record for tear flow increased

109 FDA adverse-event reports reference tear flow increased (VeDDRA 437). See the species, breeds, and drugs most associated with it below.

109
reports citing this reaction
8.3%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
109
Total Reports
9
Deaths
8.3%
Death Rate

Species Most Affected

Dog 75
Cat 25
Human 6
Horse 2
Goat 1

Breeds Most Affected

Domestic Shorthair 16
Chihuahua 13
Unknown 6
Retriever - Labrador 6
Crossbred Canine/dog 5
Dog (unknown) 4
Shih Tzu 3
Spitz - German Pomeranian 3
Maltese 3
Domestic Longhair 3

Associated Drugs

Milbemycin Oxime + Spinosad 15
Florfenicol + Mometasone Furoate + Terbinafine Hydrochloride 10
Afoxolaner 7
Spinosad 5
Cyclosporine 5
Maropitant Citrate 5
Bedinvetmab 5
Selamectin 4
Oclacitinib Maleate 4
Prednisone 4
Nitenpyram 3
Enrofloxacin 3
Pyrantel Pamoate;Sarolaner 3
Pyrantel Pamoate 3
Antidiarrheal (Unknown) 3
Mirtazapine 3
Imidacloprid + Moxidectin 2
Polysulfated Glycosaminoglycan 2
Betamethasone + Florfenicol + Terbinafine 2
Anti-Il31 Mab Mcs Lot #1283563 2

Tear flow increased Reaction Insights

109 reports name Tear flow increased; 9 recorded a death outcome (8.3% of reported events, not a population-level mortality rate). VeDDRA code: 437.

By species: Dog (75 reports), Cat (25 reports), Human (6 reports). By breed: Domestic Shorthair (16), Chihuahua (13), Unknown (6).

Most co-reported drugs: Milbemycin Oxime + Spinosad (15 reports), Florfenicol + Mometasone Furoate + Terbinafine Hydrochloride (10 reports), Afoxolaner (7 reports), Spinosad (5 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.