Drug profile

The FDA adverse-event record for Unspecified Flea Preventative

10 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Unspecified Flea Preventative. See the species affected, top reactions, and outcomes below.

10
adverse-event reports
0.0%
death-coded share
Cat
most-reported species
5
Lack of efficacy (endoparasite) - tapeworm - 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.
10
Total Reports
0
Deaths Reported
0.0%
Death Rate

Active Ingredients

Unspecified Flea Preventative

Administration Routes

TopicalUnknown

Species Affected

Cat 7
Dog 3

Most Affected Breeds

Domestic Shorthair 5
Maine Coon 1
Dogo Argentino 1
Dog (unknown) 1
Siamese 1
Shepherd Dog - Australian 1

Most Reported Reactions

Lack of efficacy (endoparasite) - tapeworm 5
INEFFECTIVE, WORMS NOS 3
Vomiting 2
Panting 2
Increased heart rate 2
Behavioural disorder NOS 1
Hives (see also 'Skin') 1
Inappropriate schedule of drug administration 1
Lack of efficacy (ectoparasite) - flea 1
Decreased appetite 1
Elevated liver enzymes NOS 1

Outcome Breakdown

Outcome Unknown
7 (70.0%)
Ongoing
2 (20.0%)
Recovered/Normal
1 (10.0%)

Unspecified Flea Preventative Adverse Event Insights

10 reports name Unspecified Flea Preventative; 0 recorded a death outcome (0.0% of reported events, not a population-level mortality rate). Active ingredient: Unspecified Flea Preventative. Administration routes: Topical, Unknown.

By species: Cat (7 reports), Dog (3 reports). By breed: Domestic Shorthair (5), Maine Coon (1), Dogo Argentino (1).

Leading clinical signs: Lack of efficacy (endoparasite) - tapeworm (5), INEFFECTIVE, WORMS NOS (3), Vomiting (2), Panting (2). Outcome, 10 coded reports: Outcome Unknown leads at 70.0%.

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.