Drug profile

The FDA adverse-event record for Estradiol + Progesterone

14 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Estradiol + Progesterone. See the species affected, top reactions, and outcomes below.

14
adverse-event reports
57.1%
death-coded share
Cattle
most-reported species
8
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.
14
Total Reports
8
Deaths Reported
57.1%
Death Rate

Active Ingredients

EstradiolProgesterone

Administration Routes

OtherUnknownSubcutaneous

Species Affected

Cattle 10
Unknown 4

Most Affected Breeds

Unknown 4
Cattle (unknown) 2
Mixed (Cattle) 2
Aberdeen Angus 2
Charolais 1
Hereford cattle 1
Crossbred Bovine/Cattle 1
Red Angus 1

Most Reported Reactions

Death 8
Anaphylaxis 3
NT - Abnormal necropsy finding NOS 3
Recumbency 3
Depression 2
Nasal discharge 2
Pyrexia 2
Weight loss 2
INEFFECTIVE, WEIGHT INC 2
Injection site haematoma 1
Injection site reaction NOS 1
Dyspnoea 1

Outcome Breakdown

Died
8 (66.7%)
Ongoing
2 (16.7%)
Outcome Unknown
2 (16.7%)

Estradiol + Progesterone Adverse Event Insights

14 reports name Estradiol + Progesterone; 8 recorded a death outcome (57.1% of reported events, not a population-level mortality rate). Active ingredients: Estradiol, Progesterone. Administration routes: Other, Unknown, Subcutaneous.

By species: Cattle (10 reports), Unknown (4 reports). By breed: Unknown (4), Cattle (unknown) (2), Mixed (Cattle) (2).

Leading clinical signs: Death (8), Anaphylaxis (3), NT - Abnormal necropsy finding NOS (3), Recumbency (3). Outcome, 12 coded reports: Died leads at 66.7%.

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.