Drug profile

The FDA adverse-event record for Praziquantel;Moxidectin

193 FDA reports name Praziquantel;Moxidectin, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#546 of 2,679
by report volume (all drugs)
193
adverse-event reports
14.0%
death-coded share
Horse
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Praziquantel;Moxidectin ranks #544 of 2679 by total reports (193) and #402 of 1130 by death-coded share (14.0%). 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)
#544
This drug, reports of 2679
#402
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. Praziquantel;Moxidectin has 193 reports now versus 193 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 Praziquantel;Moxidectin changes

Signature read: death-coded report count at 27 is the most distinctive stamp on Praziquantel;Moxidectin's FDA AER row.

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
193
Total Reports
27
Deaths Reported
14.0%
Death-coded share of reports

Active Ingredients

Praziquantel;Moxidectin

Administration Routes

OralUnknownOphthalmicIntramuscular

Species Affected

Horse 145
Unknown 27
Dog 12
Human 5
Other Equids 3
Donkey 1

Most Affected Breeds

Quarter Horse 51
Unknown 33
Horse (unknown) 16
Thoroughbred 14
Warmblood (unspecified) 8
Paint 8
Miniature 6
Friesian 4
Arab 4
Morgan 3

Most Reported Reactions

Colic 30
Diarrhoea 20
Death by euthanasia 15
Fever 15
Ataxia 14
Death 11
Lethargy (see also Central nervous system depression in 'Neurological') 11
Anorexia 10
Underfilling, Container 9
Seizure NOS 8
Lack of efficacy (endoparasite) - strongylids 8
Lack of efficacy - NOS 7

Outcome Breakdown

Recovered/Normal
56 (33.3%)
Outcome Unknown
45 (26.8%)
Ongoing
39 (23.2%)
Euthanized
14 (8.3%)
Died
13 (7.7%)
Recovered with Sequela
1 (0.6%)

Praziquantel;Moxidectin: high report volume 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 Praziquantel;Moxidectin, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar death-coded share

Nearest other drugs by death-coded share (14.0% here), distinct from the volume row.

What to do with this drug

  • Compare Praziquantel;Moxidectin'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 Praziquantel;Moxidectin (#546 of 2,679 by report volume); death-coded 14.0%. PlainBreed drug row · death-coded report count stamp 27 · 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 →