Drug profile

The FDA adverse-event record for Fluralaner/Moxidectin Spot-On

3,768 FDA reports name Fluralaner/Moxidectin Spot-On, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#60 of 2,679
by report volume (all drugs)
3,768
adverse-event reports
3.0%
death-coded share
Cat
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Fluralaner/Moxidectin Spot-On ranks #60 of 2679 by total reports (3,768) and #915 of 1130 by death-coded share (3.0%). 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)
#60
This drug, reports of 2679
#915
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. Fluralaner/Moxidectin Spot-On has 3,768 reports now versus 3,652 in that prior snapshot: 116 more (3.2%).

Report change
+116
Death-coded reports
+2
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 Fluralaner/Moxidectin Spot-On changes

Signature read: 3,768 reports place Fluralaner/Moxidectin Spot-On in the upper third of FDA AER volume (#60 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.
3,768
Total Reports
114
Deaths Reported
3.0%
Death-coded share of reports

Active Ingredients

Fluralaner/Moxidectin Spot-On

Administration Routes

TopicalUnknownOralSubcutaneousOtherRespiratory (Inhalation)IntraocularImmersionRectalOphthalmic

Species Affected

Cat 3,050
Unknown 522
Human 190
Dog 5
Gerbil 1

Most Affected Breeds

Domestic Shorthair 1,971
Unknown 726
Domestic Longhair 254
Cat (unknown) 237
Domestic Mediumhair 215
Crossbred Feline/cat 52
Maine Coon 52
Siamese 48
Persian 23
Cat (other) 22

Most Reported Reactions

Application site hair loss 642
Lack of efficacy (ectoparasite) - flea 621
Lethargy (see also Central nervous system depression in 'Neurological') 231
Underfilling, Container 208
Emesis (multiple) 196
Foaming at the mouth 168
Containers, Leaking 167
Application site stickiness 146
Behavioural disorder NOS 144
Lethargy (see also Central nervous system depression in Neurological) 139
Application site alopecia 135
Vomiting 122

Outcome Breakdown

Ongoing
2,268 (69.9%)
Recovered/Normal
668 (20.6%)
Outcome Unknown
179 (5.5%)
Died
67 (2.1%)
Euthanized
47 (1.4%)
Recovered with Sequela
17 (0.5%)

Fluralaner/Moxidectin Spot-On: 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 Fluralaner/Moxidectin Spot-On, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar death-coded share

Nearest other drugs by death-coded share (3.0% here), distinct from the volume row.

What to do with this drug

  • Compare Fluralaner/Moxidectin Spot-On'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 Fluralaner/Moxidectin Spot-On (#60 of 2,679 by report volume); death-coded 3.0%. PlainBreed drug row · report volume stamp 3,768 · 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 →