Drug profile

The FDA adverse-event record for Furosemide

1,845 FDA reports name Furosemide, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#116 of 2,679
by report volume (all drugs)
1,845
adverse-event reports
25.0%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Furosemide ranks #116 of 2679 by total reports (1,845) and #170 of 1130 by death-coded share (25.0%). National dual: Milbemycin Oxime + Spinosad is #1 of 2679 drugs by total adverse-event reports (149,624) at death-coded-share rank 965 of 1130 drugs with at least 50 reports (2.3%); separately, Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) is #1 highest death-coded share at 97.8% (report rank #821).

149,624
Milbemycin Oxime + Spinosad reports (#1)
97.8%
Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) death share (#1)
#116
This drug, reports of 2679
#170
This drug, death share of 1130

Report volume reflects how common a breed or drug is and how often owners and vets file — not actual risk. Death-coded share ranks are limited to entries with enough reports to be meaningful. The two maps do not agree at #1.

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. Furosemide has 1,845 reports now versus 1,806 in that prior snapshot: 39 more (2.2%).

Report change
+39
Death-coded reports
+10
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 Furosemide changes

Signature read: death-coded report count at 462 is the most distinctive stamp on Furosemide's FDA AER row.

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
1,845
Total Reports
462
Deaths Reported
25.0%
Death-coded share of reports

Active Ingredients

Furosemide

Administration Routes

UnknownOralIntravenousSubcutaneousIntramuscularParenteralIntraocularVaginalOther

Species Affected

Dog 1,268
Unknown 299
Cat 249
Human 13
Horse 11
Pig 2
Cattle 1
Other Birds 1
Ferret 1

Most Affected Breeds

Unknown 316
Chihuahua 185
Domestic Shorthair 167
Shih Tzu 80
Maltese 74
Terrier - Yorkshire 69
Spitz - German Pomeranian 68
Spaniel - King Charles Cavalier 50
Retriever - Labrador 41
Dog (unknown) 40

Most Reported Reactions

Vomiting 258
Lethargy (see also Central nervous system depression in 'Neurological') 234
Death 230
Death by euthanasia 228
Diarrhoea 186
Color, Abnormal 161
Anorexia 159
Elevated blood urea nitrogen (BUN) 135
Seizure NOS 134
Abnormal radiograph finding 133
Cough 127
Weight loss 114

Outcome Breakdown

Outcome Unknown
395 (25.7%)
Recovered/Normal
325 (21.2%)
Ongoing
324 (21.1%)
Died
246 (16.0%)
Euthanized
219 (14.3%)
Recovered with Sequela
25 (1.6%)

Furosemide: high death-coded share in the FDA AER row

Read these counts as reporting volume, not risk: per our methodology, a widely-prescribed drug will rack up more raw FDA reports in a given year than a rarely-used one at an identical true rate, so we recommend comparing within similar-exposure products rather than across the full 2025 catalog.

High-volume nationwide drug peers

Two openFDA-derived peer sets for Furosemide, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar death-coded share

Nearest other drugs by death-coded share (25.0% here), distinct from the volume row.

What to do with this drug

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 Furosemide (#116 of 2,679 by report volume); death-coded 25.0%. PlainBreed drug row · death-coded report count stamp 462 · 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 →