Drug profile

The FDA adverse-event record for Imidacloprid + Permethrin + N-Methylpyrolidone

253 FDA reports name Imidacloprid + Permethrin + N-Methylpyrolidone, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#475 of 2,679
by report volume (all drugs)
253
adverse-event reports
2.8%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Imidacloprid + Permethrin + N-Methylpyrolidone ranks #474 of 2679 by total reports (253) and #934 of 1130 by death-coded share (2.8%). 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)
#474
This drug, reports of 2679
#934
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. Imidacloprid + Permethrin + N-Methylpyrolidone has 253 reports now versus 253 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 Imidacloprid + Permethrin + N-Methylpyrolidone changes

Signature read: 253 reports place Imidacloprid + Permethrin + N-Methylpyrolidone in the upper third of FDA AER volume (#475 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.
253
Total Reports
7
Deaths Reported
2.8%
Death-coded share of reports

Active Ingredients

Imidacloprid + Permethrin + N-Methylpyrolidone

Administration Routes

TopicalUnknownOralCutaneousOther

Species Affected

Dog 251
Unknown 1
Cat 1

Most Affected Breeds

Retriever - Labrador 35
Retriever - Golden 14
Chihuahua 13
Crossbred Canine/dog 12
Dog (unknown) 10
Shih Tzu 9
Shepherd Dog - German 7
Boxer (German Boxer) 7
Pit Bull 7
Shepherd Dog - Australian 7

Most Reported Reactions

Lethargy (see also Central nervous system depression in 'Neurological') 53
Lack of efficacy (ectoparasite) - flea 48
Emesis 45
Vomiting 40
Lack of efficacy - NOS 31
Other abnormal test result NOS 17
Behavioural disorder NOS 12
INEFFECTIVE, HOOKS 9
Seizure NOS 8
Not eating 8
Diarrhoea 8
Decreased appetite 8

Outcome Breakdown

Recovered/Normal
106 (42.1%)
Outcome Unknown
98 (38.9%)
Ongoing
31 (12.3%)
Recovered with Sequela
10 (4.0%)
Died
6 (2.4%)
Euthanized
1 (0.4%)

Imidacloprid + Permethrin + N-Methylpyrolidone: 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 Imidacloprid + Permethrin + N-Methylpyrolidone, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar report volume

Nearest other drugs by FDA report count (253 here).

Similar death-coded share

Nearest other drugs by death-coded share (2.8% here), distinct from the volume row.

What to do with this drug

  • Compare Imidacloprid + Permethrin + N-Methylpyrolidone'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 Imidacloprid + Permethrin + N-Methylpyrolidone (#475 of 2,679 by report volume); death-coded 2.8%. PlainBreed drug row · report volume stamp 253 · 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 →