Pictured: ACE-inhibitors

Poisonous to: Cats, Dogs

Level of toxicity: Generally mild to moderate, depending on the dose ingested.

Common signs to watch for:

  • Vomiting
  • Diarrhea
  • Low blood pressure
  • Lethargy
  • Weakness
  • Excessive drinking or urination
  • Collapse

Angiotensin-converting enzyme (“ACE”) inhibitors are common cardiac medications used in both human and veterinary medicine to treat heart disease and hypertension (high blood pressure). When accidentally ingested in poisonous amounts by pets, ACE inhibitors can result in hypotension (low blood pressure), lethargy, weakness, vomiting, and diarrhea. Pets with underlying medical problems (e.g., kidney failure, heart disease, etc.) can be more sensitive to the effects of these medications.

Poison type: medications

Alternate names: cardiac medication, angiotensin-converting enzyme inhibitor, enalapril, captopril, lisinopril, ramipril, imidapril, benazepril, Enacard, Lotensin, Capoten, Vasotec, Prinivel, Zestril