Drug profile

The FDA adverse-event record for Bacitracin Methylene Disalicylate

51 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Bacitracin Methylene Disalicylate. See the species affected, top reactions, and outcomes below.

51
adverse-event reports
49.0%
death-coded share
Chicken
most-reported species
20
Death - 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.
51
Total Reports
25
Deaths Reported
49.0%
Death Rate

Active Ingredients

Bacitracin Methylene Disalicylate

Administration Routes

OralUnknownRespiratory (Inhalation)Topical

Species Affected

Chicken 19
Unknown 13
Turkey 5
Pig 4
Human 4
Partridge 1
Ostrich 1
Cattle 1
Other Birds 1
Quail 1

Most Affected Breeds

Unknown 19
Chicken (unknown) 9
Turkey (unknown) 5
Chicken (other) 5
Crossbred Porcine/Pig 4
Chicken (unspecified) 3
Partridge 2
Mixed (Chicken) 1
Cattle (other) 1
Other Birds (other) 1

Most Reported Reactions

Death 20
Lack of efficacy - NOS 6
Lack of efficacy (protozoa) - Coccidia 6
Increased mortality rate 5
INEFFECTIVE, COCCIDIA 5
Accidental exposure 4
Uncoded sign 4
Enteritis 4
Recumbency 3
Unclassifiable adverse event 3
Product Defect, General 3
NT - Abnormal necropsy finding NOS 3

Outcome Breakdown

Died
25 (62.5%)
Outcome Unknown
13 (32.5%)
Recovered/Normal
2 (5.0%)

Bacitracin Methylene Disalicylate Adverse Event Insights

51 reports name Bacitracin Methylene Disalicylate; 25 recorded a death outcome (49.0% of reported events, not a population-level mortality rate). Active ingredient: Bacitracin Methylene Disalicylate. Administration routes: Oral, Unknown, Respiratory (Inhalation), Topical.

By species: Chicken (19 reports), Unknown (13 reports), Turkey (5 reports). By breed: Unknown (19), Chicken (unknown) (9), Turkey (unknown) (5).

Leading clinical signs: Death (20), Lack of efficacy - NOS (6), Lack of efficacy (protozoa) - Coccidia (6), Increased mortality rate (5). Outcome, 40 coded reports: Died leads at 62.5%.

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.