Drug profile

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

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

#889 of 2,679
by report volume (all drugs)
78
adverse-event reports
1.3%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Milbemycin Oxime, Lufenuron, Praziquantel ranks #884 of 2679 by total reports (78) and #1047 of 1130 by death-coded share (1.3%). 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)
#884
This drug, reports of 2679
#1047
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. Milbemycin Oxime, Lufenuron, Praziquantel has 78 reports now versus 76 in that prior snapshot: 2 more (2.6%).

Report change
+2
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 Milbemycin Oxime, Lufenuron, Praziquantel changes

Signature read: Milbemycin Oxime, Lufenuron, Praziquantel's 1.3% 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.
78
Total Reports
1
Deaths Reported
1.3%
Death-coded share of reports

Active Ingredients

Milbemycin Oxime, Lufenuron, Praziquantel

Administration Routes

OralUnknown

Species Affected

Dog 77
Unknown 1

Most Affected Breeds

Dog (unknown) 30
Retriever - Labrador 8
Shepherd Dog - German 5
Beagle 4
Crossbred Canine/dog 4
Retriever - Golden 3
Corgi - Welsh Cardigan 2
Collie - Border 2
Boxer (German Boxer) 1
Pit Bull 1

Most Reported Reactions

Vomiting 16
INEFFECTIVE, HOOKS 12
Lack of efficacy (endoparasite) - heartworm 11
Diarrhoea 8
Lethargy (see also Central nervous system depression in 'Neurological') 8
Lack of efficacy (flea) 6
Lack of efficacy (heartworm) 6
Seizure NOS 3
Urinary incontinence 2
Elevated alanine aminotransferase (ALT) 2
Loose stool 2
Lack of efficacy (endoparasite) - roundworm NOS 2

Outcome Breakdown

Outcome Unknown
54 (73.0%)
Recovered/Normal
12 (16.2%)
Ongoing
7 (9.5%)
Died
1 (1.4%)

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

What to do with this drug

  • Compare Milbemycin Oxime, Lufenuron, 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 Milbemycin Oxime, Lufenuron, Praziquantel (#889 of 2,679 by report volume); death-coded 1.3%. PlainBreed drug row · death-coded share stamp 1.3% · 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 →