Drug profile

The FDA adverse-event record for Afoxolaner 9.375Mg / Moxidectin 45Mcg / Pyrantel 18.75Mg Chewable Tablet

261 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Afoxolaner 9.375Mg / Moxidectin 45Mcg / Pyrantel 18.75Mg Chewable Tablet. See the species affected, top reactions, and outcomes below.

261
adverse-event reports
1.9%
death-coded share
Dog
most-reported species
70
Vomiting - 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.
261
Total Reports
5
Deaths Reported
1.9%
Death Rate

Active Ingredients

Afoxolaner 9.375Mg / Moxidectin 45Mcg / Pyrantel 18.75Mg Chewable Tablet

Administration Routes

OralUnknownTopical

Species Affected

Dog 239
Unknown 21
Human 1

Most Affected Breeds

Chihuahua 35
Terrier - Yorkshire 32
Dog (unknown) 29
Unknown 22
Beagle 21
Maltese 17
Poodle - Toy 10
Spitz - German Pomeranian 9
Poodle - Miniature 8
Dachshund (unspecified) 8

Most Reported Reactions

Vomiting 70
Diarrhoea 34
Lethargy (see also Central nervous system depression in Neurological) 33
Lack of efficacy (ectoparasite) - flea 18
Lack of efficacy (endoparasite) - roundworm NOS 15
Not eating 13
Tablets, Abnormal 12
Seizure NOS 11
Lack of efficacy (bacteria) - Borrelia 10
Lack of efficacy (endoparasite) - tapeworm 9
Decreased appetite 9
Shaking 8

Outcome Breakdown

Outcome Unknown
115 (47.9%)
Recovered/Normal
97 (40.4%)
Ongoing
23 (9.6%)
Died
3 (1.3%)
Euthanized
2 (0.8%)

Afoxolaner 9.375Mg / Moxidectin 45Mcg / Pyrantel 18.75Mg Chewable Tablet Adverse Event Insights

261 reports name Afoxolaner 9.375Mg / Moxidectin 45Mcg / Pyrantel 18.75Mg Chewable Tablet; 5 recorded a death outcome (1.9% of reported events, not a population-level mortality rate). Active ingredient: Afoxolaner 9.375Mg / Moxidectin 45Mcg / Pyrantel 18.75Mg Chewable Tablet. Administration routes: Oral, Unknown, Topical.

By species: Dog (239 reports), Unknown (21 reports), Human (1 reports). By breed: Chihuahua (35), Terrier - Yorkshire (32), Dog (unknown) (29).

Leading clinical signs: Vomiting (70), Diarrhoea (34), Lethargy (see also Central nervous system depression in Neurological) (33), Lack of efficacy (ectoparasite) - flea (18). Outcome, 240 coded reports: Outcome Unknown leads at 47.9%.

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.