Drug profile

The FDA adverse-event record for Praziquantel + Pyrantel

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

#243 of 2,679
by report volume (all drugs)
679
adverse-event reports
5.4%
death-coded share
Cat
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Praziquantel + Pyrantel ranks #242 of 2679 by total reports (679) and #764 of 1130 by death-coded share (5.4%). 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)
#242
This drug, reports of 2679
#764
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 + Pyrantel has 679 reports now versus 679 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 + Pyrantel changes

Signature read: 679 reports place Praziquantel + Pyrantel in the upper third of FDA AER volume (#243 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.
679
Total Reports
37
Deaths Reported
5.4%
Death-coded share of reports

Active Ingredients

PraziquantelPraziquantel + PyrantelPyrantel

Administration Routes

OralUnknownTopical

Species Affected

Cat 636
Dog 22
Unknown 19
Human 2

Most Affected Breeds

Domestic Shorthair 399
Cat (unknown) 85
Domestic Longhair 48
Domestic Mediumhair 47
Unknown 23
Siamese 13
Himalayan 7
Russian 6
Maine Coon 6
Persian 5

Most Reported Reactions

Ataxia 191
Vomiting 170
Lethargy (see also Central nervous system depression in 'Neurological') 90
Anorexia 48
Behavioural disorder NOS 46
Emesis 44
Lack of efficacy (endoparasite) - tapeworm 44
Hypersalivation 40
Diarrhoea 39
Emesis (multiple) 29
Pruritus 25
Overdose 22

Outcome Breakdown

Recovered/Normal
366 (55.5%)
Outcome Unknown
245 (37.1%)
Died
22 (3.3%)
Euthanized
15 (2.3%)
Ongoing
12 (1.8%)

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

Similar report volume

Nearest other drugs by FDA report count (679 here).

Similar death-coded share

Nearest other drugs by death-coded share (5.4% here), distinct from the volume row.

What to do with this drug

  • Compare Praziquantel + Pyrantel'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 + Pyrantel (#243 of 2,679 by report volume); death-coded 5.4%. PlainBreed drug row · report volume stamp 679 · 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 →