Reaction profile

The FDA adverse-event record for scour

40 FDA adverse-event reports reference scour (VeDDRA 303). See the species, breeds, and drugs most associated with it below.

40
reports citing this reaction
55.0%
death-coded share
Cattle
most-affected species
Monensin Sodium
most-associated drug
Verify with FDA CVM →
40
Total Reports
22
Deaths
55.0%
Death Rate

Species Most Affected

Cattle 33
Pig 4
Horse 2
Dog 1

Breeds Most Affected

Holstein-Friesian also known as Holstein 9
Cattle (unknown) 8
Cattle (other) 6
Aberdeen Angus 5
Pig (unknown) 4
Jersey 3
Crossbred Bovine/Cattle 2
Shepherd Dog - German 1
Quarter Horse 1
Horse (unknown) 1

Associated Drugs

Monensin Sodium 12
Tulathromycin 5
Bovine Parainfluenza Virus 3 (Ts), Rlb103 (Nl-Bk-6), Mlv; Bovine Respiratory Syn 5
Tildipirosin Injectable 4
Ractopamine Hydrochloride 3
Ivermectin(1%)/Clorsulon(10%) Injection 3
Bovine Parainfluenza Virus 3, Reisinger(Nl-Bk-6), Mlv; Bovine Respiratory Syncyt 2
Moxidectin 2
Bovine Viral Diarrhea Virus, Type 2, Strain 53637, Lot Bvd2Mlv-D; Bovine Viral D 2
Ivermectin 0.5% Pour-On Topical Solution 2
Avilamycin 2
Doramectin 2
Vitamin E & Selenium 1
Lasalocid 1
30Mg Pyrantel Pamoate/ 30Mg Praziquantel 1
Florfenicol/Flunixin Inj-Triac 1
Doramectin; Phenol 1
Narasin 1
Eprinomectin 5% Injection 1
Bovine Rhinotracheitis-Virus Diarrhea-Parainfluenza 3-Respiratory Syncytial Virus Vaccine, Killed Virus 1

Scour Reaction Insights

40 reports name Scour; 22 recorded a death outcome (55.0% of reported events, not a population-level mortality rate). VeDDRA code: 303.

By species: Cattle (33 reports), Pig (4 reports), Horse (2 reports). By breed: Holstein-Friesian also known as Holstein (9), Cattle (unknown) (8), Cattle (other) (6).

Most co-reported drugs: Monensin Sodium (12 reports), Tulathromycin (5 reports), Bovine Parainfluenza Virus 3 (Ts), Rlb103 (Nl-Bk-6), Mlv; Bovine Respiratory Syn (5 reports), Tildipirosin Injectable (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.