Pet Recall Facts

Ingredients / Flumethrin

Flumethrin: FDA adverse event reports for pets

Reports received through June 26, 2026. Data and limitations.

2,714Total reports
2,105Dog reports
605Cat reports

FDA-approved products with this ingredient (Green Book)

No matching Green Book entry is supplied in this dataset. This alone does not establish regulatory status.

EPA-registered pesticide. Flea and tick products with this ingredient, such as many collars, spot-ons and shampoos, are registered by the U.S. Environmental Protection Agency (EPA), not approved by FDA, so they have no FDA Green Book record. Pet owners still send reports about them to FDA, and those reports are counted here. Questions about these products: National Pesticide Information Center.

Brand names come only from the Green Book. Brand names in FDA's public report data are masked, so counts cannot be attributed to any brand. Ingredient names in the reports are written many ways; we group them under one ingredient name and count each report once per ingredient (method).

Reports by year received

20091
20123
201353
201470
2015118
2016153
2017191
2018160
2019229
2020256
2021195
2022329
2023346
2024292
2025215
2026103

Species named in reports

Dog2,105
Cat605
Not given2
Human1
Other Canids1

Signs reported after Flumethrin

Lack of efficacy (ectoparasite) - flea948
Pruritus443
Lethargy (see also Central nervous system depression in Neurological)300
Vomiting243
Behavioural disorder NOS209
Lack of efficacy (ectoparasite) - tick NOS147
Application site pruritus142
Application site alopecia139
Other abnormal test result NOS136
Diarrhoea126
Anorexia120
Seizure NOS112
Application site erythema107
Weight loss87
Scratching82
Application site scab78
Lack of efficacy (bacteria) - Borrelia71
Application site lesion69
Skin lesion NOS68
Emesis (multiple)68
Vocalisation56
Application site irritation56
Lack of efficacy (endoparasite) - heartworm56
Application site hair loss55
Erythema (for urticaria see Immune SOC)54

Breeds named in reports

Domestic Shorthair328
Dog (unknown)236
Retriever - Labrador227
Crossbred Canine/dog144
Poodle (unspecified)116
Chihuahua112
Retriever - Golden107
Terrier - Yorkshire103
Cat (unknown)101
Shepherd Dog - German96
Shih Tzu93
Shepherd Dog - Australian87
Domestic Longhair75
Pit Bull72
Beagle60

Reported outcomes

Outcome Unknown1,583
Recovered/Normal532
Ongoing491
Died54
Euthanized43
Recovered with Sequela10

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