Drug profile

The FDA adverse-event record for Lambda-Cyhalotrin/Pip But P-On

19 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Lambda-Cyhalotrin/Pip But P-On. See the species affected, top reactions, and outcomes below.

19
adverse-event reports
73.7%
death-coded share
Cattle
most-reported species
12
Death - 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.
19
Total Reports
14
Deaths Reported
73.7%
Death Rate

Active Ingredients

Lambda-Cyhalotrin/Pip But P-On

Administration Routes

TopicalUnknown

Species Affected

Cattle 19

Most Affected Breeds

Crossbred Bovine/Cattle 6
Cattle (other) 6
Aberdeen Angus 3
Brangus 2
Red Angus 1
Wagyu 1

Most Reported Reactions

Death 12
Lack of efficacy - NOS 6
Lack of efficacy (bacteria) - NOS 2
Abortion 2
Anaphylactic-type reaction 2
Respiratory signs 1
Convulsion 1
Abnormal necropsy finding 1
Pulmonary congestion 1
Lung collapse 1
Pulmonary oedema 1
INEFFECTIVE, WORMS 1

Outcome Breakdown

Died
14 (43.8%)
Ongoing
9 (28.1%)
Recovered/Normal
7 (21.9%)
Outcome Unknown
2 (6.3%)

Lambda-Cyhalotrin/Pip But P-On Adverse Event Insights

19 reports name Lambda-Cyhalotrin/Pip But P-On; 14 recorded a death outcome (73.7% of reported events, not a population-level mortality rate). Active ingredient: Lambda-Cyhalotrin/Pip But P-On. Administration routes: Topical, Unknown.

By species: Cattle (19 reports). By breed: Crossbred Bovine/Cattle (6), Cattle (other) (6), Aberdeen Angus (3).

Leading clinical signs: Death (12), Lack of efficacy - NOS (6), Lack of efficacy (bacteria) - NOS (2), Abortion (2). Outcome, 32 coded reports: Died leads at 43.8%.

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.