Reaction profile

The FDA adverse-event record for neurological symptoms nos

788 FDA adverse-event reports reference neurological symptoms nos (VeDDRA 1648). See the species, breeds, and drugs most associated with it below.

788
reports citing this reaction
22.2%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
788
Total Reports
175
Deaths
22.2%
Death Rate

Species Most Affected

Dog 649
Cat 90
Horse 24
Cattle 8
Human 7
Turkey 3
Goat 3
Chicken 2
Sheep 2

Breeds Most Affected

Domestic Shorthair 54
Retriever - Labrador 43
Dog (unknown) 43
Retriever - Golden 37
Crossbred Canine/dog 34
Maltese 28
Chihuahua 27
Terrier - Yorkshire 25
Boxer (German Boxer) 24
Pit Bull 18

Associated Drugs

Milbemycin Oxime + Spinosad 181
Spinosad 60
Bedinvetmab 57
Pyrantel Pamoate;Sarolaner 54
Afoxolaner 50
Sarolaner 48
Ivermectin 36
Ivermectin + Pyrantel As Pamoate Salt 28
Trilostane 21
Gabapentin 21
Carprofen 20
Fluralaner 13.64% 12-Week Chew 20
Maropitant Citrate 18
Frunevetmab 17
Moxidectin 16
Fluralaner Chew Tablets 15
Lotilaner 15
Prednisone 14
Selamectin 12
Oclacitinib Maleate 11

Neurological symptoms NOS Reaction Insights

788 reports name Neurological symptoms NOS; 175 recorded a death outcome (22.2% of reported events, not a population-level mortality rate). VeDDRA code: 1648.

By species: Dog (649 reports), Cat (90 reports), Horse (24 reports). By breed: Domestic Shorthair (54), Retriever - Labrador (43), Dog (unknown) (43).

Most co-reported drugs: Milbemycin Oxime + Spinosad (181 reports), Spinosad (60 reports), Bedinvetmab (57 reports), Pyrantel Pamoate;Sarolaner (54 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.