Drug profile

The FDA adverse-event record for Torsemide

39 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Torsemide. Species, reactions, and outcomes follow.

#1281 of 2,679
by report volume (all drugs)
39
adverse-event reports
10.3%
death-coded share
Dog
most-reported species
Verify with FDA CVM →

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Torsemide ranks #1263 of 2679 by total reports (39). Death-coded-share rank requires at least 50 reports. 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)
#1263
This drug, reports of 2679

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. Torsemide has 39 reports now versus 36 in that prior snapshot: 3 more (8.3%).

Report change
+3
Death-coded reports
+1
Death-coded share
+1.9 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 Torsemide changes

Signature read: report volume at 39 is the most distinctive stamp on Torsemide'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.
39
Total Reports
4
Deaths Reported
10.3%
Death-coded share of reports

Active Ingredients

Torsemide

Administration Routes

OralUnknown

Species Affected

Dog 31
Cat 7
Unknown 1

Most Affected Breeds

Domestic Shorthair 7
Dog (unknown) 6
Spaniel - King Charles Cavalier 4
Poodle (unspecified) 3
Maltese 3
Chihuahua 2
Collie - Border 2
Crossbred Canine/dog 1
Spaniel (unspecified) 1
Mixed (Dog) 1

Most Reported Reactions

Elevated blood urea nitrogen (BUN) 10
Elevated creatinine 7
Vomiting 6
Death by euthanasia 4
Hypochloraemia 4
Hypokalaemia 4
Cough 4
Weight loss 3
Polyuria 3
Restlessness 3
Decreased appetite 3
Azotaemia 3

Outcome Breakdown

Outcome Unknown
23 (59.0%)
Recovered/Normal
11 (28.2%)
Died
2 (5.1%)
Euthanized
2 (5.1%)
Ongoing
1 (2.6%)

Torsemide Adverse Event Insights

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.

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 Torsemide (#1281 of 2,679 by report volume); death-coded 10.3%. PlainBreed drug row · report volume stamp 39 · 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 →