Reaction profile

The FDA adverse-event record for ineffective, tranquilization

Name: INEFFECTIVE, TRANQUILIZATION - FDA Animal Adverse Reaction
Creator: PlainBreed
License: https://open.fda.gov/license/

16 FDA reports name ineffective, tranquilization, a lower-volume reaction in the CVM extract (VeDDRA 99156). Plate stamps and neighbourhood peers follow.

#2278 of 2,481
by report volume (all reactions): 16
reports citing this reaction: 31.3%
death-coded share: Dog
most-affected species

Compiled by PlainBreed

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, TRANQUILIZATION 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, TRANQUILIZATION changes

FDA AER · VeDDRA plate

Code 99156 VOL-TRACE

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

VOL-TRACE 16 reports
DEATH-HOT 31.3%
BOTTOM-DECILE #2278/2481
PHOTO-FINISH Abdominal transudate
SPECIES-DOG Dog · 7
DRUG-LEAD Acepromazine Male… · 14
DESK-MID 7 breeds
BOOK-FULL 8/8 fields

Nearest volume peer: Abdominal transudate (±0 reports)

Upper-third death-coded share drives the outcome stamps on this plate; volume band, corpus rank, and co-report peers follow. Not a clinical diagnosis.

Lower-volume neighbourhood around INEFFECTIVE, TRANQUILIZATION

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

FDA AER report volume · neighbourhood around INEFFECTIVE, TRANQUILIZATION

INEFFECTIVE, TRANQUILIZATION: high death-coded share in the FDA AER plate

Signature read: 16 reports place INEFFECTIVE, TRANQUILIZATION in the lower third of FDA AER volume (#2278 of 2,481). Report volume is lower-third scale: 16 named reports in the openFDA extract. Death-coded share is upper-third: 5 of 16 reports (31.3% of named reports). Nearest volume peer: Abdominal transudate (±0 reports). Lead species Dog (7). Lead co-reported drug Acepromazine Maleate (14).

Read these counts as reporting volume, not risk: per our methodology, A high death-coded share in FDA filings does not prove causation; co-reporting is voluntary temporal association only. Browse the full reactions index or the about page for how PlainBreed frames FDA CVM extracts.

Species Most Affected

Dog 7

Horse 4

Cattle 3

Cat 2

Breeds Most Affected

Dog (unknown) 4

Cattle (unknown) 3

Quarter Horse 3

Retriever - Labrador 2

Cat (unknown) 2

Horse (unknown) 1

Terrier - Yorkshire 1

Associated Drugs

Acepromazine Maleate 14

Ketamine Hydrochloride 3

General Anesthesia 1

What to do with this reaction

Read how death-coded share differs from a mortality rate before drawing conclusions. Understanding adverse events
Browse the full reaction directory to compare report counts across reaction types. All reactions

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, TRANQUILIZATION (#2278 of 2,481 by report volume); death-coded 31.3%. 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 →