Reaction profile

The FDA adverse-event record for welt

472 FDA reports name welt, a high-volume reaction in the CVM extract (VeDDRA 1875). Plate stamps and neighbourhood peers follow.

#664 of 2,481
by report volume (all reactions)
472
reports citing this reaction
3.0%
death-coded share
Dog
most-affected species

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. Welt has 472 reports now versus 463 in that prior snapshot: 9 more (1.9%).

Report change
+9
Death-coded reports
+0
Death-coded share
−0.1 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 Welt changes

FDA AER · VeDDRA plate

Code 1875 VOL-LOW

VOL-LOW · DEATH-LOW · MID-PACK · PHOTO-FINISH · SPECIES-DOG · DRUG-LEAD · DESK-WIDE · BOOK-FULL

  • VOL-LOW 472 reports
  • DEATH-LOW 3.0%
  • MID-PACK #664/2481
  • PHOTO-FINISH Heart failure
  • SPECIES-DOG Dog · 417
  • DRUG-LEAD Milbemycin Oxime… · 68
  • DESK-WIDE 20 breeds
  • BOOK-FULL 8/8 fields

Nearest volume peer: Heart failure (±0 reports)

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

High-volume neighbourhood around Welt

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

Vomiting · highest174348Abscess NOS · near474Apprehension · near473Paralysis · near473Heart failure · near472Welt · this reaction472Urinary tract neoplas… · low…10
FDA AER report volume · neighbourhood around Welt

Welt: low death-coded share in the FDA AER plate

Signature read: Welt's 3.0% death-coded share is among the lowest in the openFDA reaction corpus. Report volume is upper-third scale: 472 named reports in the openFDA extract. Death-coded share is lower-third: 14 of 472 reports (3.0% of named reports). Nearest volume peer: Heart failure (±0 reports). Lead species Dog (417). Lead co-reported drug Milbemycin Oxime + Spinosad (68).

Read these counts as reporting volume, not risk: per our methodology, Lead co-reported drug Milbemycin Oxime + Spinosad 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

Dog 417
Human 23
Cat 23
Horse 8
Goat 1

Breeds Most Affected

Pit Bull 30
Chihuahua 30
Retriever - Labrador 28
Crossbred Canine/dog 28
Unknown 24
Terrier - Bull - American Pit 22
Terrier - Yorkshire 21
Dachshund (unspecified) 19
Boxer (German Boxer) 17
Retriever - Golden 12

Associated Drugs

Milbemycin Oxime + Spinosad 68
Moxidectin 63
Afoxolaner 42
Oclacitinib Maleate 34
Spinosad 26
Anti-Il31 Mab Mcs Lot #1283563 26
Prednisone 20
Ivermectin + Pyrantel As Pamoate Salt 19
Fluralaner Chew Tablets 18
Maropitant Citrate 17
Milbemycin Oxime + Praziquantel 16
Nitenpyram 15
Fluralaner 13.64% 12-Week Chew 15
Selamectin 14
Pyrantel Pamoate;Sarolaner 13
Sarolaner 12
Carprofen 10
Imidacloprid + Moxidectin 9
Ivermectin 9
Diphenhydramine Hcl 9

Nationwide reactions with similar profiles

Two openFDA-derived peer sets for Welt, both floored at ≥50 reports so the neighborhoods stay in the advertised mass (the volume chart above is the unfloored photo-finish strip).

Similar report volume

Nearest other reactions by FDA report count (472 here).

Similar death-coded share

Nearest other reactions by death-coded share (3.0% here), distinct from the volume row.

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 Welt (#664 of 2,481 by report volume); death-coded 3.0%. PlainBreed reaction plate · death-coded share stamp 3.0% · 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 →