Tolazoline — 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. Tolazoline is a active ingredient.
Total reports
Tolazoline: 34
Reports by species (top entries)
- Horse 10
- Cattle 7
- Other Deer 7
- Llama 6
- Dog 1
- Goat 1
Top reported reactions (VEDDRA terms, top entries)
- Death 22
- Collapse (see also 'Cardio-vascular' and 'Systemic disorders') 6
- Tachycardia 4
- Apnoea 3
- Paddling 3
- Recumbency 3
- Respiratory distress 3
- Anaphylaxis 2
- Ataxia 2
- Convulsion 2
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b26.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).