Drug profile

The FDA adverse-event record for Nitarsone

11 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Nitarsone. See the species affected, top reactions, and outcomes below.

11
adverse-event reports
27.3%
death-coded share
Unknown
most-reported species
4
Granules/Powder, Abnormal - 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.
11
Total Reports
3
Deaths Reported
27.3%
Death Rate

Active Ingredients

Nitarsone

Administration Routes

UnknownOral

Species Affected

Unknown 6
Other Birds 3
Pig 1
Turkey 1

Most Affected Breeds

Unknown 6
Other Birds (unknown) 2
Crossbred Porcine/Pig 1
Turkey (unknown) 1
Other Birds (other) 1

Most Reported Reactions

Granules/Powder, Abnormal 4
Seal, Abnormal 2
Death 2
Uncoded sign 2
Product Defect, General 2
No sign 2
Potency, Low 1
Hard, clumping 1
Anorexia 1
Respiratory tract infection NOS 1
Increased mortality rate 1

Outcome Breakdown

Died
3 (50.0%)
Outcome Unknown
3 (50.0%)

Nitarsone Adverse Event Insights

11 reports name Nitarsone; 3 recorded a death outcome (27.3% of reported events, not a population-level mortality rate). Active ingredient: Nitarsone. Administration routes: Unknown, Oral.

By species: Unknown (6 reports), Other Birds (3 reports), Pig (1 reports). By breed: Unknown (6), Other Birds (unknown) (2), Crossbred Porcine/Pig (1).

Leading clinical signs: Granules/Powder, Abnormal (4), Seal, Abnormal (2), Death (2), Uncoded sign (2). Outcome, 6 coded reports: Died leads at 50.0%.

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.