Drug profile

The FDA adverse-event record for Flumethrin + Imidacloprid

350 FDA reports name Flumethrin + Imidacloprid, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#382 of 2,679
by report volume (all drugs)
350
adverse-event reports
1.7%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Flumethrin + Imidacloprid ranks #382 of 2679 by total reports (350) and #1010 of 1130 by death-coded share (1.7%). 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)
#382
This drug, reports of 2679
#1010
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. Flumethrin + Imidacloprid has 350 reports now versus 350 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 Flumethrin + Imidacloprid changes

Signature read: 350 reports place Flumethrin + Imidacloprid in the upper third of FDA AER volume (#382 of 2,679).

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
350
Total Reports
6
Deaths Reported
1.7%
Death-coded share of reports

Active Ingredients

FlumethrinFlumethrin + ImidaclopridImidacloprid

Administration Routes

TopicalCutaneousUnknownOtherTransdermal

Species Affected

Dog 306
Cat 44

Most Affected Breeds

Retriever - Labrador 38
Crossbred Canine/dog 32
Dog (unknown) 20
Retriever - Golden 18
Terrier - Yorkshire 15
Domestic Shorthair 15
Cat (unknown) 14
Shepherd Dog - German 13
Chihuahua 12
Shih Tzu 10

Most Reported Reactions

Lack of efficacy (ectoparasite) - flea 116
Pruritus 92
Vomiting 38
Lethargy (see also Central nervous system depression in 'Neurological') 34
Behavioural disorder NOS 25
Lack of efficacy (flea) 24
Other abnormal test result NOS 20
Diarrhoea 15
Emesis 14
INEFFECTIVE, HOOKS 13
Lack of efficacy (endoparasite) - heartworm 13
Seizure NOS 12

Outcome Breakdown

Outcome Unknown
209 (59.7%)
Ongoing
78 (22.3%)
Recovered/Normal
53 (15.1%)
Recovered with Sequela
4 (1.1%)
Died
4 (1.1%)
Euthanized
2 (0.6%)

Flumethrin + Imidacloprid: low 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 Flumethrin + Imidacloprid, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

What to do with this drug

  • Compare Flumethrin + Imidacloprid's report volume and death-coded share against similar drugs nationwide. See similar drugs
  • Read how death-coded share differs from a mortality rate before drawing conclusions. Understanding adverse events
  • Browse the full drug directory to compare report counts across products. All drugs

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 Flumethrin + Imidacloprid (#382 of 2,679 by report volume); death-coded 1.7%. PlainBreed drug row · report volume stamp 350 · 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 →