Reaction profile

The FDA adverse-event record for tense abdomen

1,256 FDA reports name tense abdomen, a high-volume reaction in the CVM extract (VeDDRA 1978). Plate stamps and neighbourhood peers follow.

#327 of 2,481
by report volume (all reactions)
1,256
reports citing this reaction
22.1%
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. Tense abdomen has 1,256 reports now versus 1,220 in that prior snapshot: 36 more (3.0%).

Report change
+36
Death-coded reports
+8
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 Tense abdomen changes

FDA AER · VeDDRA plate

Code 1978 VOL-MID

VOL-MID · DEATH-HOT · UPPER-Q · PHOTO-FINISH · SPECIES-DOG · DRUG-LEAD · DESK-WIDE · BOOK-FULL

  • VOL-MID 1,256 reports
  • DEATH-HOT 22.1%
  • UPPER-Q #327/2481
  • PHOTO-FINISH Respiratory distress
  • SPECIES-DOG Dog · 1,166
  • DRUG-LEAD Milbemycin Oxime… · 196
  • DESK-WIDE 20 breeds
  • BOOK-FULL 8/8 fields

Nearest volume peer: Respiratory distress (±3 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 Tense abdomen

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

Vomiting · highest174348Stomach upset · near1266Incorrect route of dr… · near1264Respiratory distress · near1259Tense abdomen · this reaction1256Decreased drinking · near1250Urinary tract neoplas… · low…10
FDA AER report volume · neighbourhood around Tense abdomen

What the FDA AER plate says about Tense abdomen

Signature read: 278 death-coded reports is a heavy tail count for Tense abdomen in the CVM extract. Report volume is upper-third scale: 1,256 named reports in the openFDA extract. 278 of 1,256 reports were death-coded (22.1% of named reports, not a population mortality rate). Nearest volume peer: Respiratory distress (±3 reports). Lead species Dog (1,166). Lead co-reported drug Milbemycin Oxime + Spinosad (196).

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 1,166
Cat 83
Horse 4
Other Canids 1
Cattle 1
Goat 1

Breeds Most Affected

Retriever - Labrador 122
Crossbred Canine/dog 78
Terrier - Yorkshire 63
Domestic Shorthair 53
Chihuahua 51
Maltese 47
Retriever - Golden 42
Shepherd Dog - German 41
Beagle 39
Shih Tzu 38

Associated Drugs

Milbemycin Oxime + Spinosad 196
Maropitant Citrate 144
Carprofen 143
Gabapentin 72
Afoxolaner 69
Oclacitinib Maleate 62
Spinosad 58
Deracoxib 58
Moxidectin 56
Fluralaner Chew Tablets 55
Pyrantel Pamoate;Sarolaner 51
Grapiprant 46
Fluralaner 13.64% 12-Week Chew 46
Tramadol 45
Ivermectin + Pyrantel As Pamoate Salt 45
Metronidazole 39
Buprenorphine 39
Rabies Vaccine 37
Enrofloxacin 37
Bedinvetmab 34

Nationwide reactions with similar profiles

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

Similar death-coded share

Nearest other reactions by death-coded share (22.1% 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 Tense abdomen (#327 of 2,481 by report volume); death-coded 22.1%. PlainBreed reaction plate · death-coded report count stamp 278 · 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 →