Drug profile

The FDA adverse-event record for Lufenuron + Milbemycin Oxime + Praziquantel

2,444 FDA reports name Lufenuron + Milbemycin Oxime + Praziquantel, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#90 of 2,679
by report volume (all drugs)
2,444
adverse-event reports
1.1%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Lufenuron + Milbemycin Oxime + Praziquantel ranks #90 of 2679 by total reports (2,444) and #1066 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)
#90
This drug, reports of 2679
#1066
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. Lufenuron + Milbemycin Oxime + Praziquantel has 2,444 reports now versus 2,444 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 Lufenuron + Milbemycin Oxime + Praziquantel changes

Signature read: 2,444 reports place Lufenuron + Milbemycin Oxime + Praziquantel in the upper third of FDA AER volume (#90 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.
2,444
Total Reports
26
Deaths Reported
1.1%
Death-coded share of reports

Active Ingredients

LufenuronMilbemycin OximePraziquantel

Administration Routes

OralUnknownOphthalmicRespiratory (Inhalation)

Species Affected

Dog 2,296
Unknown 146
Human 2

Most Affected Breeds

Retriever - Labrador 425
Unknown 148
Dog (unknown) 138
Retriever - Golden 126
Shepherd Dog - German 115
Crossbred Canine/dog 102
Pit Bull 83
Chihuahua 64
Beagle 63
Boxer (German Boxer) 57

Most Reported Reactions

INEFFECTIVE, HOOKS 528
Lack of efficacy (endoparasite) - heartworm 422
Vomiting 382
Lack of efficacy (heartworm) 199
Diarrhoea 176
Lethargy (see also Central nervous system depression in 'Neurological') 141
INEFFECTIVE, HEARTWORM LARVAE 137
Lack of efficacy (roundworm) 127
Product problem 123
Containers, Damaged 86
Lack of efficacy (endoparasite) - roundworm NOS 79
Underdose 72

Outcome Breakdown

Outcome Unknown
1,659 (72.2%)
Recovered/Normal
578 (25.1%)
Ongoing
33 (1.4%)
Euthanized
13 (0.6%)
Died
13 (0.6%)
Recovered with Sequela
3 (0.1%)

Lufenuron + Milbemycin Oxime + Praziquantel: 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 Lufenuron + Milbemycin Oxime + Praziquantel, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar report volume

Nearest other drugs by FDA report count (2,444 here).

Similar death-coded share

Nearest other drugs by death-coded share (1.1% here), distinct from the volume row.

What to do with this drug

  • Compare Lufenuron + Milbemycin Oxime + Praziquantel'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 Lufenuron + Milbemycin Oxime + Praziquantel (#90 of 2,679 by report volume); death-coded 1.1%. PlainBreed drug row · report volume stamp 2,444 · 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 →