Phenothrin — FDA Animal & Veterinary Adverse Event (ADE) Reports
Source: openFDA animalandveterinary/event.json, the FDA Center for Veterinary Medicine (CVM) adverse event report database. Data pulled 2026-07-22. Counts are report-level: one report may list multiple reactions and multiple animals, so figures are not additive and do not imply causation. Phenothrin is a active ingredient.
Total reports
Phenothrin: 34
Reports by species (top entries)
- Dog 25
- Cat 9
Top reported reactions (VEDDRA terms, top entries)
- Lack of efficacy (ectoparasite) - flea 14
- Lack of efficacy (flea) 6
- Itching 4
- Lethargy (see also Central nervous system depression in 'Neurological') 4
- Vomiting 3
- Behavioural disorder NOS 2
- Seizure NOS 2
- Vocalisation 2
- Abnormal movement NOS 1
- Accidental exposure 1
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b29.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).