Drug profile

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

3,685 FDA reports name Milbemcyin Oxime, Lufenuron, Praziquantel, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#64 of 2,679
by report volume (all drugs)
3,685
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, Milbemcyin Oxime, Lufenuron, Praziquantel ranks #64 of 2679 by total reports (3,685) and #1059 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)
#64
This drug, reports of 2679
#1059
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. Milbemcyin Oxime, Lufenuron, Praziquantel has 3,685 reports now versus 3,685 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 Milbemcyin Oxime, Lufenuron, Praziquantel changes

Signature read: 3,685 reports place Milbemcyin Oxime, Lufenuron, Praziquantel in the upper third of FDA AER volume (#64 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.
3,685
Total Reports
41
Deaths Reported
1.1%
Death-coded share of reports

Active Ingredients

Milbemcyin Oxime, Lufenuron, Praziquantel

Administration Routes

OralUnknownOtherTopical

Species Affected

Dog 3,486
Unknown 193
Human 3
Cat 2
Other Canids 1

Most Affected Breeds

Retriever - Labrador 481
Crossbred Canine/dog 418
Unknown 198
Shepherd Dog - German 164
Retriever - Golden 151
Dog (unknown) 124
Chihuahua 107
Beagle 101
Terrier - Yorkshire 89
Collie - Border 87

Most Reported Reactions

INEFFECTIVE, HEARTWORM LARVAE 617
Vomiting 589
Lack of efficacy (endoparasite) - hookworm 549
Diarrhoea 322
INEFFECTIVE, ASCARIDS NOS 301
Lethargy (see also Central nervous system depression in 'Neurological') 250
Lack of efficacy (endoparasite) - tapeworm 225
Lack of efficacy - NOS 215
Lack of efficacy (endoparasite) - whipworm 157
Emesis 131
Lack of efficacy (ectoparasite) - flea 128
INEFFECTIVE, HOOKS 114

Outcome Breakdown

Outcome Unknown
2,065 (59.1%)
Recovered/Normal
1,205 (34.5%)
Ongoing
170 (4.9%)
Died
26 (0.7%)
Euthanized
15 (0.4%)
Recovered with Sequela
14 (0.4%)

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

Similar report volume

Nearest other drugs by FDA report count (3,685 here).

What to do with this drug

  • Compare Milbemcyin 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 Milbemcyin Oxime, Lufenuron, Praziquantel (#64 of 2,679 by report volume); death-coded 1.1%. PlainBreed drug row · report volume stamp 3,685 · 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 →