See your vet immediately if your dog ingests even a small amount of nitroglycerin.
Immediate veterinary attention is needed if you observe:
- Rapid or irregular heartbeat Low blood pressure (signs include weakness, collapse) Difficulty breathing Blue gums (cyanosis) Seizures Vomiting Diarrhea Severe weakness or lethargy
Even if your dog shows only mild symptoms, contact your veterinarian or an emergency animal hospital. Early intervention significantly improves the chances of a successful outcome. Time is crucial in treating nitroglycerin poisoning.
Have the following information ready when you contact the veterinary service:
- The amount of nitroglycerin your dog ingested (if known). The time of ingestion. Your dog’s weight and breed. Any other medications your dog is taking.
Don’t delay seeking help. Act quickly to give your dog the best possible chance of recovery.


