Drug profile

The FDA adverse-event record for Tiamulin Hydrogen Fumarate

56 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Tiamulin Hydrogen Fumarate. See the species affected, top reactions, and outcomes below.

56
adverse-event reports
53.6%
death-coded share
Pig
most-reported species
21
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.
56
Total Reports
30
Deaths Reported
53.6%
Death Rate

Active Ingredients

Tiamulin Hydrogen Fumarate

Administration Routes

OralUnknown

Species Affected

Pig 39
Unknown 15
Other Birds 1
Human 1

Most Affected Breeds

Crossbred Porcine/Pig 19
Unknown 17
Pig (unknown) 13
Commercial hybrid 5
Pig (other) 1
Mixed (Pig) 1

Most Reported Reactions

Death 21
Lack of efficacy (bacteria) - NOS 16
NT - Abnormal necropsy finding NOS 9
Product Defect, General 7
Death by euthanasia 6
Lack of efficacy - NOS 5
Other abnormal test result NOS 4
Lethargy (see also Central nervous system depression in 'Neurological') 4
Diarrhoea 3
Digestive tract disorder NOS 3
Cardiac disorder NOS 3
Containers, Leaking 3

Outcome Breakdown

Died
26 (46.4%)
Outcome Unknown
17 (30.4%)
Euthanized
7 (12.5%)
Recovered/Normal
5 (8.9%)
Ongoing
1 (1.8%)

Tiamulin Hydrogen Fumarate Adverse Event Insights

56 reports name Tiamulin Hydrogen Fumarate; 30 recorded a death outcome (53.6% of reported events, not a population-level mortality rate). Active ingredient: Tiamulin Hydrogen Fumarate. Administration routes: Oral, Unknown.

By species: Pig (39 reports), Unknown (15 reports), Other Birds (1 reports). By breed: Crossbred Porcine/Pig (19), Unknown (17), Pig (unknown) (13).

Leading clinical signs: Death (21), Lack of efficacy (bacteria) - NOS (16), NT - Abnormal necropsy finding NOS (9), Product Defect, General (7). Outcome, 56 coded reports: Died leads at 46.4%.

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.