Drug profile

The FDA adverse-event record for Fenbendazol Pellets

74 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Fenbendazol Pellets. Species, reactions, and outcomes follow.

#910 of 2,679
by report volume (all drugs)
74
adverse-event reports
25.7%
death-coded share
Cattle
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Fenbendazol Pellets ranks #907 of 2679 by total reports (74) and #159 of 1130 by death-coded share (25.7%). 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)
#907
This drug, reports of 2679
#159
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. Fenbendazol Pellets has 74 reports now versus 74 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 Fenbendazol Pellets changes

Signature read: Fenbendazol Pellets's 25.7% death-coded share is among the highest in the openFDA drug corpus.

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
74
Total Reports
19
Deaths Reported
25.7%
Death-coded share of reports

Active Ingredients

Fenbendazol Pellets

Administration Routes

OralUnknownTopical

Species Affected

Cattle 33
Unknown 17
Pig 14
Horse 4
Dog 3
Other Birds 1
Sheep 1
Human 1

Most Affected Breeds

Cattle (other) 19
Unknown 18
Pig (unknown) 9
Crossbred Porcine/Pig 3
Holstein-Friesian also known as Holstein 3
Cattle (unspecified) 3
Crossbred Bovine/Cattle 3
Cattle (unknown) 2
Horse (unknown) 1
Other Birds (other) 1

Most Reported Reactions

Death 15
Lack of efficacy (endoparasite) - NOS 12
Product Defect, General 6
Product problem 6
Appearance, Abnormal 6
Lethargy (see also Central nervous system depression in 'Neurological') 5
Defect Unknown/Not Specified 4
UNPALATABLE 4
Lack of efficacy - NOS 4
Contamination, Mold 4
Milk production decrease 3
Not eating 3

Outcome Breakdown

Outcome Unknown
19 (28.4%)
Died
17 (25.4%)
Recovered/Normal
16 (23.9%)
Ongoing
13 (19.4%)
Euthanized
2 (3.0%)

Fenbendazol Pellets: high 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.

Nationwide drugs with similar profiles

Two openFDA-derived peer sets for Fenbendazol Pellets, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar report volume

Nearest other drugs by FDA report count (74 here).

Similar death-coded share

Nearest other drugs by death-coded share (25.7% here), distinct from the volume row.

What to do with this drug

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 Fenbendazol Pellets (#910 of 2,679 by report volume); death-coded 25.7%. PlainBreed drug row · death-coded share stamp 25.7% · 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 →