Reaction profile

The FDA adverse-event record for ineffective, nematodes

16 FDA reports name ineffective, nematodes, a lower-volume reaction in the CVM extract (VeDDRA 99131). Plate stamps and neighbourhood peers follow.

#2277 of 2,481
by report volume (all reactions)
16
reports citing this reaction
12.5%
death-coded share
Cattle
most-affected species
Verify with FDA CVM →

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. INEFFECTIVE, NEMATODES has 16 reports now versus 16 in that prior snapshot: 0 the same number of (0.0%).

Report change
+0
Death-coded reports
+0
Death-coded share
+0.0 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to INEFFECTIVE, NEMATODES changes

FDA AER · VeDDRA plate

Code 99131 VOL-TRACE

VOL-TRACE · DEATH-ELEV · BOTTOM-DECILE · PHOTO-FINISH · SPECIES-CATTLE · DRUG-LEAD · DESK-MID · BOOK-FULL

  • VOL-TRACE 16 reports
  • DEATH-ELEV 12.5%
  • BOTTOM-DECILE #2277/2481
  • PHOTO-FINISH Abdominal transudate
  • SPECIES-CATTLE Cattle · 12
  • DRUG-LEAD Doramectin · 5
  • DESK-MID 7 breeds
  • BOOK-FULL 8/8 fields

Nearest volume peer: Abdominal transudate (±0 reports)

Instrument codes from this reaction’s FDA CVM adverse-event extract: volume band, death-coded share, corpus rank, photo-finish peer, lead species, lead drug, breed desk, and book completeness. Not a clinical diagnosis.

Lower-volume neighbourhood around INEFFECTIVE, NEMATODES

Lower-third volume poles plus nearest peers, not a full reaction corpus board reprint.

Vomiting · highest174348Abdominal transudate · near16Abnormal rectal palpa… · near16AMMONIA INCREASED, BL… · near16Application site gran… · near16INEFFECTIVE, NEMATODES · thi…16Urinary tract neoplas… · low…10
FDA AER report volume · neighbourhood around INEFFECTIVE, NEMATODES

What the FDA AER plate says about INEFFECTIVE, NEMATODES

Signature read: 16 reports place INEFFECTIVE, NEMATODES in the lower third of FDA AER volume (#2277 of 2,481). Report volume is lower-third scale: 16 named reports in the openFDA extract. 2 of 16 reports were death-coded (12.5% of named reports, not a population mortality rate). Nearest volume peer: Abdominal transudate (±0 reports). Lead species Cattle (12). Lead co-reported drug Doramectin (5).

Read these counts as reporting volume, not risk: per our methodology, Lead co-reported drug Doramectin appears in filings alongside this reaction; that is association, not causation. Browse the full reactions index or the about page for how PlainBreed frames FDA CVM extracts.

Species Most Affected

Cattle 12
Dog 3
Sheep 1

Breeds Most Affected

Mixed (Cattle) 4
Cattle (unknown) 3
Cattle (other) 3
Aberdeen Angus 2
Retriever - Labrador 2
Sheep (other) 1
Coonhound - Black and Tan 1

Associated Drugs

Doramectin 5
Fenbendazol Suspension 2
Eprinomectin 2
Ivermectin + Pyrantel As Pamoate Salt 2
Ivermectin(1%)/Clorsulon(10%) Injection 1
Fenbendazol Meal 1
Fenbendazol Pellets 1
Fenbendazol Block 1
Moxidectin 1
Oxfendazole 1
Ivermectin 1
Clorsulon + Ivermectin 1
Albendazole 1
Imidacloprid + Moxidectin 1
Pyrantel, Praziquantel And Oxantel 1
Milbemycin Oxime/Praziquantel 1

What to do with this reaction

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

openFDA Animal & Veterinary Adverse Events (FDA CVM) for INEFFECTIVE, NEMATODES (#2277 of 2,481 by report volume); death-coded 12.5%. PlainBreed reaction plate · report volume stamp 16 · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →