Drug profile

The FDA adverse-event record for Oxytetracycline Dihydrate (Oxytetracycline Amphoteric)

136 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Oxytetracycline Dihydrate (Oxytetracycline Amphoteric). See the species affected, top reactions, and outcomes below.

136
adverse-event reports
25.7%
death-coded share
Cattle
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.
136
Total Reports
35
Deaths Reported
25.7%
Death Rate

Active Ingredients

Oxytetracycline Dihydrate (Oxytetracycline Amphoteric)

Administration Routes

SubcutaneousUnknownIntramuscularOphthalmicIntravenousTopicalOralIntradermalAuricular (Otic)

Species Affected

Cattle 61
Unknown 29
Human 19
Dog 8
Cat 5
Goat 4
Horse 4
Sheep 3
Pig 2
Duck 1

Most Affected Breeds

Unknown 49
Mixed (Cattle) 30
Aberdeen Angus 11
Cattle (other) 7
Siamese 3
Jersey 3
Holstein-Friesian also known as Holstein 2
Sheep (unknown) 2
Beagle 2
Goat (unknown) 2

Most Reported Reactions

Death 21
Lack of efficacy (bacteria) - NOS 12
Containers, Damaged 11
Injection site swelling 11
Injection site pain 10
Anaphylaxis 10
Lack of efficacy - NOS 10
Accidental exposure 9
Lethargy (see also Central nervous system depression in 'Neurological') 7
No sign 7
Anaphylactic-type reaction 7
Containers, Leaking 6

Outcome Breakdown

Outcome Unknown
46 (35.9%)
Died
33 (25.8%)
Recovered/Normal
32 (25.0%)
Ongoing
15 (11.7%)
Euthanized
2 (1.6%)

Oxytetracycline Dihydrate (Oxytetracycline Amphoteric) Adverse Event Insights

136 reports name Oxytetracycline Dihydrate (Oxytetracycline Amphoteric); 35 recorded a death outcome (25.7% of reported events, not a population-level mortality rate). Active ingredient: Oxytetracycline Dihydrate (Oxytetracycline Amphoteric). Administration routes: Subcutaneous, Unknown, Intramuscular, Ophthalmic.

By species: Cattle (61 reports), Unknown (29 reports), Human (19 reports). By breed: Unknown (49), Mixed (Cattle) (30), Aberdeen Angus (11).

Leading clinical signs: Death (21), Lack of efficacy (bacteria) - NOS (12), Containers, Damaged (11), Injection site swelling (11). Outcome, 128 coded reports: Outcome Unknown leads at 35.9%.

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.