Drug profile

The FDA adverse-event record for Tilmicosin

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

469
adverse-event reports
30.7%
death-coded share
Human
most-reported species
129
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.
469
Total Reports
144
Deaths Reported
30.7%
Death Rate

Active Ingredients

Tilmicosin

Administration Routes

ParenteralUnknownOralSubcutaneousTopicalIntramuscularCutaneousIntraocularIntradermalOphthalmic

Species Affected

Human 188
Cattle 166
Unknown 81
Pig 30
Sheep 2
Horse 1
Dog 1

Most Affected Breeds

Unknown 270
Cattle (unknown) 61
Crossbred Bovine/Cattle 27
Aberdeen Angus 23
Holstein-Friesian also known as Holstein 18
Pig (unknown) 14
Mixed (Cattle) 13
Crossbred Porcine/Pig 10
Cattle (other) 7
Jersey 4

Most Reported Reactions

Death 129
Accidental exposure 111
Injection site bleeding 37
Injection site swelling 28
Injection site pain 25
Containers, Leaking 25
Lack of efficacy - NOS 24
Bad taste 22
Anaphylaxis 17
Unclassifiable adverse event 17
High blood pressure 16
Increased heart rate 16

Outcome Breakdown

Died
143 (32.4%)
Recovered/Normal
123 (27.8%)
Outcome Unknown
105 (23.8%)
Ongoing
57 (12.9%)
Euthanized
14 (3.2%)

Tilmicosin Adverse Event Insights

469 reports name Tilmicosin; 144 recorded a death outcome (30.7% of reported events, not a population-level mortality rate). Active ingredient: Tilmicosin. Administration routes: Parenteral, Unknown, Oral, Subcutaneous.

By species: Human (188 reports), Cattle (166 reports), Unknown (81 reports). By breed: Unknown (270), Cattle (unknown) (61), Crossbred Bovine/Cattle (27).

Leading clinical signs: Death (129), Accidental exposure (111), Injection site bleeding (37), Injection site swelling (28). Outcome, 442 coded reports: Died leads at 32.4%.

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.