Drug profile

The FDA adverse-event record for Afoxolaner 18.75Mg / Moxidectin 90Mcg / Pyrantel 37.5Mg Chewable Tablet

1,374 FDA reports name Afoxolaner 18.75Mg / Moxidectin 90Mcg / Pyrantel 37.5Mg Chewable Tablet, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#144 of 2,679
by report volume (all drugs)
1,374
adverse-event reports
1.5%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Afoxolaner 18.75Mg / Moxidectin 90Mcg / Pyrantel 37.5Mg Chewable Tablet ranks #144 of 2679 by total reports (1,374) and #1025 of 1130 by death-coded share (1.5%). 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)
#144
This drug, reports of 2679
#1025
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. Afoxolaner 18.75Mg / Moxidectin 90Mcg / Pyrantel 37.5Mg Chewable Tablet has 1,374 reports now versus 1,268 in that prior snapshot: 106 more (8.4%).

Report change
+106
Death-coded reports
+0
Death-coded share
−0.1 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 Afoxolaner 18.75Mg / Moxidectin 90Mcg / Pyrantel 37.5Mg Chewable Tablet changes

Signature read: 1,374 reports place Afoxolaner 18.75Mg / Moxidectin 90Mcg / Pyrantel 37.5Mg Chewable Tablet in the upper third of FDA AER volume (#144 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.
1,374
Total Reports
21
Deaths Reported
1.5%
Death-coded share of reports

Active Ingredients

Afoxolaner 18.75Mg / Moxidectin 90Mcg / Pyrantel 37.5Mg Chewable Tablet

Administration Routes

OralUnknownTopicalVaginal

Species Affected

Dog 1,266
Unknown 106
Human 1
Cat 1

Most Affected Breeds

Shih Tzu 132
Chihuahua 116
Unknown 108
Dog (unknown) 91
Terrier - Yorkshire 78
Dachshund (unspecified) 58
Maltese 56
Retriever - Golden 50
Spaniel - King Charles Cavalier 44
Crossbred Canine/dog 43

Most Reported Reactions

Vomiting 346
Diarrhoea 153
Lethargy (see also Central nervous system depression in Neurological) 138
Lack of efficacy (endoparasite) - hookworm 125
Lack of efficacy (bacteria) - Borrelia 94
Tablets, Abnormal 84
Lack of efficacy (endoparasite) - roundworm NOS 78
Seizure NOS 77
Lack of efficacy (ectoparasite) - flea 73
Not eating 49
Lack of efficacy (endoparasite) - heartworm 45
Lack of efficacy (bacteria) - Anaplasma 39

Outcome Breakdown

Outcome Unknown
650 (51.3%)
Recovered/Normal
434 (34.2%)
Ongoing
161 (12.7%)
Died
15 (1.2%)
Euthanized
6 (0.5%)
Recovered with Sequela
2 (0.2%)

Afoxolaner 18.75Mg / Moxidectin 90Mcg / Pyrantel 37.5Mg Chewable Tablet: 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 Afoxolaner 18.75Mg / Moxidectin 90Mcg / Pyrantel 37.5Mg Chewable Tablet, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar death-coded share

Nearest other drugs by death-coded share (1.5% here), distinct from the volume row.

What to do with this drug

  • Compare Afoxolaner 18.75Mg / Moxidectin 90Mcg / Pyrantel 37.5Mg Chewable Tablet'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 Afoxolaner 18.75Mg / Moxidectin 90Mcg / Pyrantel 37.5Mg Chewable Tablet (#144 of 2,679 by report volume); death-coded 1.5%. PlainBreed drug row · report volume stamp 1,374 · 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 →