Reaction profile

The FDA adverse-event record for ineffective, ovulation

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

15 FDA reports name ineffective, ovulation, a lower-volume reaction in the CVM extract (VeDDRA 99133). Plate stamps and neighbourhood peers follow.

#2305 of 2,481
by report volume (all reactions): 15
reports citing this reaction: 0.0%
death-coded share: Horse
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, OVULATION has 15 reports now versus 15 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, OVULATION changes

FDA AER · VeDDRA plate

Code 99133 VOL-TRACE

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

VOL-TRACE 15 reports
DEATH-RARE 0.0%
BOTTOM-DECILE #2305/2481
PHOTO-FINISH Abomasal ulcer
SPECIES-HORSE Horse · 10
DRUG-LEAD Deslorelin Acetate · 9
DESK-MID 7 breeds
BOOK-FULL 8/8 fields

Nearest volume peer: Abomasal ulcer (±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, OVULATION

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

FDA AER report volume · neighbourhood around INEFFECTIVE, OVULATION

INEFFECTIVE, OVULATION: low death-coded share in the FDA AER plate

Signature read: 15 reports place INEFFECTIVE, OVULATION in the lower third of FDA AER volume (#2305 of 2,481). Report volume is lower-third scale: 15 named reports in the openFDA extract. Death-coded share is lower-third: 0 of 15 reports (0.0% of named reports). Nearest volume peer: Abomasal ulcer (±0 reports). Lead species Horse (10). Lead co-reported drug Deslorelin Acetate (9).

Read these counts as reporting volume, not risk: per our methodology, Lead co-reported drug Deslorelin Acetate 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

Horse 10

Frog 3

Cattle 1

Dog 1

Breeds Most Affected

Horse (unknown) 4

Unknown 3

Quarter Horse 3

Mixed (Horse) 2

Cattle (unknown) 1

Hanovarian 1

Bulldog 1

Associated Drugs

Deslorelin Acetate 9

Hcg (Fd) Injectable 3

Chorionic Gonadotropin 2

Gonadorelin Diacetate Tetrahydrate 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, OVULATION (#2305 of 2,481 by report volume); death-coded 0.0%. PlainBreed reaction plate · report volume stamp 15 · 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 →