Theobromine
Quick answer
A methylxanthine alkaloid in cocoa that dogs metabolise slowly. Dark and baking chocolate contain the most; toxicity is dose-dependent on weight and type. Phone your vet or Animal PoisonLine immediately after any chocolate ingestion — do not wait for symptoms.
Definition
A methylxanthine alkaloid in cocoa that dogs metabolise slowly. Dark and baking chocolate contain the most; toxicity is dose-dependent on weight and type.
Symptoms
- Vomiting and diarrhoea
- Restlessness and hyperactivity
- Rapid heart rate
- Muscle tremors or seizures
- Collapse at high doses
When to see a vet
Phone your vet or Animal PoisonLine immediately after any chocolate ingestion — do not wait for symptoms.
Related guides & tools
Related topics
- Chocolate(Substance)
- Animal PoisonLine(ContactPoint)
Frequently Asked Questions
- What is Theobromine?
- A methylxanthine alkaloid in cocoa that dogs metabolise slowly. Dark and baking chocolate contain the most; toxicity is dose-dependent on weight and type.
- What are the symptoms of theobromine?
- Common signs include Vomiting and diarrhoea, Restlessness and hyperactivity, Rapid heart rate, Muscle tremors or seizures. This is not a complete list — individual pets vary. See linked guides for fuller context.
- When should I see a vet about theobromine?
- Phone your vet or Animal PoisonLine immediately after any chocolate ingestion — do not wait for symptoms.