Drug profile

The FDA adverse-event record for Fipronil 9.8%/S-Methoprene 8.8%/Cyphenothrin 5.2% Squeeze-On

556 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Fipronil 9.8%/S-Methoprene 8.8%/Cyphenothrin 5.2% Squeeze-On. See the species affected, top reactions, and outcomes below.

556
adverse-event reports
0.4%
death-coded share
Dog
most-reported species
139
Restlessness - 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.
556
Total Reports
2
Deaths Reported
0.4%
Death Rate

Active Ingredients

Fipronil 9.8%/S-Methoprene 8.8%/Cyphenothrin 5.2% Squeeze-On

Administration Routes

UnknownOtherOralSubconjunctivalTopical

Species Affected

Dog 556

Most Affected Breeds

Shih Tzu 78
Crossbred Canine/dog 42
Bichon Frise 39
Maltese 38
Retriever - Labrador 24
Chihuahua 23
Poodle - Toy 20
Retriever - Golden 19
Terrier - Yorkshire 18
Spitz - German Pomeranian 15

Most Reported Reactions

Restlessness 139
Behavioural disorder NOS 79
Hyperactivity 71
Itching 68
Scratching 68
Twitching 60
Lethargy (see also Central nervous system depression in 'Neurological') 53
Vomiting 52
Agitation 45
Vocalisation 39
Anxiety 39
Panting 38

Outcome Breakdown

Recovered/Normal
271 (48.7%)
Outcome Unknown
266 (47.8%)
Ongoing
16 (2.9%)
Euthanized
1 (0.2%)
Recovered with Sequela
1 (0.2%)
Died
1 (0.2%)

Fipronil 9.8%/S-Methoprene 8.8%/Cyphenothrin 5.2% Squeeze-On Adverse Event Insights

556 reports name Fipronil 9.8%/S-Methoprene 8.8%/Cyphenothrin 5.2% Squeeze-On; 2 recorded a death outcome (0.4% of reported events, not a population-level mortality rate). Active ingredient: Fipronil 9.8%/S-Methoprene 8.8%/Cyphenothrin 5.2% Squeeze-On. Administration routes: Unknown, Other, Oral, Subconjunctival.

By species: Dog (556 reports). By breed: Shih Tzu (78), Crossbred Canine/dog (42), Bichon Frise (39).

Leading clinical signs: Restlessness (139), Behavioural disorder NOS (79), Hyperactivity (71), Itching (68). Outcome, 556 coded reports: Recovered/Normal leads at 48.7%.

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.