Reaction profile

The FDA adverse-event record for no sign

3,052 FDA adverse-event reports reference no sign (VeDDRA 93157). See the species, breeds, and drugs most associated with it below.

3,052
reports citing this reaction
3.2%
death-coded share
Dog
most-affected species
Selamectin
most-associated drug
Verify with FDA CVM →
3,052
Total Reports
97
Deaths
3.2%
Death Rate

Species Most Affected

Dog 1,151
Unknown 996
Human 341
Cat 220
Cattle 163
Horse 75
Goat 27
Other 21
Pig 18
Sheep 12

Breeds Most Affected

Unknown 1,384
Retriever - Labrador 168
Crossbred Canine/dog 155
Dog (unknown) 105
Domestic (unspecified) 84
Holstein-Friesian also known as Holstein 57
Shepherd Dog - German 53
Cattle (other) 51
Domestic Shorthair 48
Cat (unknown) 45

Associated Drugs

Selamectin 312
Ivermectin/Pyrantel Chew. Dog 272Mcg/227Mg 237
Amoxicillin (As Trihydrate); Clavulanate Potassium ( K-Clavulanate) 208
Spinosad 160
Pyrantel Pamoate 123
Moxidectin 122
Carprofen 96
Ivermectin 84
Ivermectin/Pyrantel Pamoate Chewable 272Mcg/652Mg 79
Ivermectin/Pyrantel Chew. Dog 68Mcg/57Mg 62
Mercaptobenzothiazole 61
Milbemycin Oxime + Spinosad 61
Ceftiofur Hydrochloride 60
Ivermectin/Pyrantel Chew. Dog 136Mcg/114Mg 58
Ceftiofur Crystalline Free Acid 46
Imidacloprid + Moxidectin 46
Nitenpyram 39
Ivermectin, Pyrantel 37
Ceftiofur Sodium 37
Tulathromycin 37

No sign Reaction Insights

3,052 reports name No sign; 97 recorded a death outcome (3.2% of reported events, not a population-level mortality rate). VeDDRA code: 93157.

By species: Dog (1,151 reports), Unknown (996 reports), Human (341 reports). By breed: Unknown (1,384), Retriever - Labrador (168), Crossbred Canine/dog (155).

Most co-reported drugs: Selamectin (312 reports), Ivermectin/Pyrantel Chew. Dog 272Mcg/227Mg (237 reports), Amoxicillin (As Trihydrate); Clavulanate Potassium ( K-Clavulanate) (208 reports), Spinosad (160 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.