Altrenogest — FDA Animal & Veterinary Adverse Event (ADE) Reports
Source: openFDA animalandveterinary/event.json, the FDA Center for Veterinary Medicine (CVM) adverse event report database. Data pulled 2026-07-22. Counts are report-level: one report may list multiple reactions and multiple animals, so figures are not additive and do not imply causation. Altrenogest is a active ingredient.
Total reports
Altrenogest: 228
Reports by species (top entries)
- Human 112
- Horse 53
- Pig 12
- Dog 6
- Other 1
Top reported reactions (VEDDRA terms, top entries)
- Unclassifiable adverse event 98
- Accidental exposure 75
- Disorders of menstrual cycle NOS 39
- Abdominal pain 22
- Containers, Leaking 16
- Headache 16
- INEFFECTIVE, ESTRUS SUPPRESSIO 14
- No sign 11
- Vials, Leaking 10
- Caps, Abnormal 8
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b17.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).