Drug profile

The FDA adverse-event record for Spinosad; Milbemycin Oxime

824 FDA reports name Spinosad; Milbemycin Oxime, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#211 of 2,679
by report volume (all drugs)
824
adverse-event reports
2.5%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Spinosad; Milbemycin Oxime ranks #210 of 2679 by total reports (824) and #947 of 1130 by death-coded share (2.5%). 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)
#210
This drug, reports of 2679
#947
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. Spinosad; Milbemycin Oxime has 824 reports now versus 824 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 Spinosad; Milbemycin Oxime changes

Signature read: 824 reports place Spinosad; Milbemycin Oxime in the upper third of FDA AER volume (#211 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.
824
Total Reports
21
Deaths Reported
2.5%
Death-coded share of reports

Active Ingredients

Spinosad; Milbemycin Oxime

Administration Routes

OralUnknownTopicalOtherCutaneous

Species Affected

Dog 733
Unknown 84
Human 4
Other 1
Cat 1
Other Canids 1

Most Affected Breeds

Unknown 89
Dog (unknown) 69
Retriever - Labrador 64
Crossbred Canine/dog 42
Chihuahua 35
Retriever - Golden 35
Shepherd Dog - German 28
Shih Tzu 28
Boxer (German Boxer) 24
Pit Bull 23

Most Reported Reactions

Emesis 259
Vomiting 131
Lethargy (see also Central nervous system depression in 'Neurological') 129
UNPALATABLE 83
Lack of efficacy (ectoparasite) - flea 48
Diarrhoea 43
Lack of efficacy - NOS 42
Behavioural disorder NOS 37
Lack of efficacy (endoparasite) - heartworm 32
Shaking 30
Seizure NOS 29
Emesis (multiple) 27

Outcome Breakdown

Recovered/Normal
413 (55.8%)
Outcome Unknown
214 (28.9%)
Ongoing
61 (8.2%)
Recovered with Sequela
31 (4.2%)
Died
13 (1.8%)
Euthanized
8 (1.1%)

Spinosad; Milbemycin Oxime: 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 Spinosad; Milbemycin Oxime, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

What to do with this drug

  • Compare Spinosad; Milbemycin Oxime'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 Spinosad; Milbemycin Oxime (#211 of 2,679 by report volume); death-coded 2.5%. PlainBreed drug row · report volume stamp 824 · 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 →