Drug profile

The FDA adverse-event record for Ivermectin + Praziquantel

489 FDA reports name Ivermectin + Praziquantel, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#306 of 2,679
by report volume (all drugs)
489
adverse-event reports
3.5%
death-coded share
Horse
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Ivermectin + Praziquantel ranks #306 of 2679 by total reports (489) and #885 of 1130 by death-coded share (3.5%). 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)
#306
This drug, reports of 2679
#885
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. Ivermectin + Praziquantel has 489 reports now versus 483 in that prior snapshot: 6 more (1.2%).

Report change
+6
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 Ivermectin + Praziquantel changes

Signature read: 489 reports place Ivermectin + Praziquantel in the upper third of FDA AER volume (#306 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.
489
Total Reports
17
Deaths Reported
3.5%
Death-coded share of reports

Active Ingredients

IvermectinIvermectin + PraziquantelPraziquantel

Administration Routes

OralUnknown

Species Affected

Horse 385
Unknown 69
Dog 25
Donkey 5
Human 2
Cat 1
Rabbit 1
Llama 1

Most Affected Breeds

Quarter Horse 91
Unknown 75
Horse (unknown) 66
Horse (other) 43
Thoroughbred 42
Arab 20
Paint 17
Crossbred Equine/horse 14
Tennessee Walking Horse 13
Warmblood (unspecified) 8

Most Reported Reactions

Swollen mouth 76
Application site swelling 59
Oral swelling 57
Hypersalivation 55
Swollen tongue 45
Swollen lip (see also 'Skin') 45
Anorexia 33
Tongue protrusion 22
Colic 22
Drooling 22
Locking Mechanism Abnormal 20
Not eating 19

Outcome Breakdown

Recovered/Normal
235 (54.8%)
Outcome Unknown
146 (34.0%)
Ongoing
30 (7.0%)
Died
12 (2.8%)
Euthanized
5 (1.2%)
Recovered with Sequela
1 (0.2%)

Ivermectin + 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 Ivermectin + Praziquantel, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar report volume

Nearest other drugs by FDA report count (489 here).

Similar death-coded share

Nearest other drugs by death-coded share (3.5% here), distinct from the volume row.

What to do with this drug

  • Compare Ivermectin + 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 Ivermectin + Praziquantel (#306 of 2,679 by report volume); death-coded 3.5%. PlainBreed drug row · report volume stamp 489 · 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 →