Drug profile

The FDA adverse-event record for Cloxacillin Benz Intramam Dc

151 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Cloxacillin Benz Intramam Dc. See the species affected, top reactions, and outcomes below.

151
adverse-event reports
51.7%
death-coded share
Cattle
most-reported species
72
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.
151
Total Reports
78
Deaths Reported
51.7%
Death Rate

Active Ingredients

Cloxacillin Benz Intramam Dc

Administration Routes

IntramammaryUnknownSubcutaneousOther

Species Affected

Cattle 105
Unknown 44
Goat 2

Most Affected Breeds

Holstein-Friesian also known as Holstein 69
Unknown 44
Cattle (other) 30
Jersey 4
Cattle (unspecified) 2
Goat (other) 2

Most Reported Reactions

Death 72
Difficulty of Use 30
Lack of efficacy (bacteria) - NOS 30
Product problem 27
Mastitis NOS 20
Lack of efficacy - NOS 17
Abortion 12
Residues in milk 12
Mammary gland disorder NOS 10
Product Defect, General 9
Uncoded sign 8
NT - Abnormal necropsy finding NOS 6

Outcome Breakdown

Died
76 (48.4%)
Outcome Unknown
39 (24.8%)
Ongoing
21 (13.4%)
Recovered/Normal
17 (10.8%)
Euthanized
4 (2.5%)

Cloxacillin Benz Intramam Dc Adverse Event Insights

151 reports name Cloxacillin Benz Intramam Dc; 78 recorded a death outcome (51.7% of reported events, not a population-level mortality rate). Active ingredient: Cloxacillin Benz Intramam Dc. Administration routes: Intramammary, Unknown, Subcutaneous, Other.

By species: Cattle (105 reports), Unknown (44 reports), Goat (2 reports). By breed: Holstein-Friesian also known as Holstein (69), Unknown (44), Cattle (other) (30).

Leading clinical signs: Death (72), Difficulty of Use (30), Lack of efficacy (bacteria) - NOS (30), Product problem (27). Outcome, 157 coded reports: Died leads at 48.4%.

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.