Guaifenesin — 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. Guaifenesin is a active ingredient.
Total reports
Guaifenesin: 54
Reports by species (top entries)
- Horse 20
- Dog 19
- Cattle 1
- Human 1
Top reported reactions (VEDDRA terms, top entries)
- Lack of efficacy - NOS 8
- Death 7
- Death by euthanasia 5
- Diarrhoea 5
- INEFFECTIVE, ANESTHESIA 5
- Solution, Abnormal 5
- Vomiting 5
- Cardiac arrest 3
- Dyspnoea 3
- Hind limb ataxia 3
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b27.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).