Drug profile

The FDA adverse-event record for Imidacloprid-Pyriproxyfen

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

#809 of 2,679
by report volume (all drugs)
93
adverse-event reports
1.1%
death-coded share
Cat
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Imidacloprid-Pyriproxyfen ranks #806 of 2679 by total reports (93) and #1063 of 1130 by death-coded share (1.1%). 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)
#806
This drug, reports of 2679
#1063
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-Pyriproxyfen has 93 reports now versus 93 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-Pyriproxyfen changes

Signature read: Imidacloprid-Pyriproxyfen's 1.1% death-coded share is among the lowest in the openFDA drug corpus.

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
93
Total Reports
1
Deaths Reported
1.1%
Death-coded share of reports

Active Ingredients

Imidacloprid-Pyriproxyfen

Administration Routes

TopicalUnknown

Species Affected

Cat 71
Dog 22

Most Affected Breeds

Domestic Shorthair 27
Cat (unknown) 22
Domestic Longhair 13
Terrier - Yorkshire 8
Domestic Mediumhair 3
Dog (unknown) 3
Mixed (Cat) 2
Chihuahua 2
Collie - Border 2
American Shorthair 1

Most Reported Reactions

Lack of efficacy (ectoparasite) - flea 70
Pruritus 7
Behavioural disorder NOS 7
Scratching 6
Lethargy (see also Central nervous system depression in Neurological) 5
Seizure NOS 4
Decreased appetite 3
Diarrhoea 3
Hyperactivity 3
Vocalisation 3
Hair loss NOS 3
Hiding 3

Outcome Breakdown

Outcome Unknown
78 (83.9%)
Recovered/Normal
14 (15.1%)
Euthanized
1 (1.1%)

Imidacloprid-Pyriproxyfen: 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-Pyriproxyfen, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar report volume

Nearest other drugs by FDA report count (93 here).

What to do with this drug

  • Compare Imidacloprid-Pyriproxyfen'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-Pyriproxyfen (#809 of 2,679 by report volume); death-coded 1.1%. PlainBreed drug row · death-coded share stamp 1.1% · 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 →