Drug profile

The FDA adverse-event record for Permethrin-Diflubenzuron

14 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Permethrin-Diflubenzuron. See the species affected, top reactions, and outcomes below.

14
adverse-event reports
0.0%
death-coded share
Cattle
most-reported species
7
Pruritus - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
14
Total Reports
0
Deaths Reported
0.0%
Death Rate

Active Ingredients

Permethrin-Diflubenzuron

Administration Routes

Topical

Species Affected

Cattle 14

Most Affected Breeds

Cattle (unknown) 11
Cattle (other) 2
Aberdeen Angus 1

Most Reported Reactions

Pruritus 7
Rubbing 4
Alopecia 4
Alopecia local 3
Hair loss NOS 2
Other abnormal test result NOS 2
No sign 2
Lack of efficacy (lice) 2
Lack of efficacy (ectoparasite) - NOS 1
Scale 1
Crust 1
Skin disorders NOS 1

Outcome Breakdown

Outcome Unknown
12 (80.0%)
Recovered/Normal
3 (20.0%)

Permethrin-Diflubenzuron Adverse Event Insights

14 reports name Permethrin-Diflubenzuron; 0 recorded a death outcome (0.0% of reported events, not a population-level mortality rate). Active ingredient: Permethrin-Diflubenzuron. Administration route: Topical.

By species: Cattle (14 reports). By breed: Cattle (unknown) (11), Cattle (other) (2), Aberdeen Angus (1).

Leading clinical signs: Pruritus (7), Rubbing (4), Alopecia (4), Alopecia local (3). Outcome, 15 coded reports: Outcome Unknown leads at 80.0%.

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.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.