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Chocolate Toxicity Calculator

Assess methylxanthine toxicity risk in dogs based on chocolate type and amount ingested

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Emergency?

If your pet is showing signs of chocolate poisoning (vomiting, restlessness, rapid breathing, tremors, seizures), contact your veterinarian or emergency clinic immediately.

Golden retriever
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Toxicity Thresholds (Total Methylxanthines)

  • <20 mg/kg: Minimal risk – Mild GI upset possible
  • 20-40 mg/kg: Mild toxicity – Vomiting, diarrhea, restlessness
  • 40-60 mg/kg: Moderate toxicity – Tachycardia, hyperactivity
  • 60-100 mg/kg: Severe toxicity – Tremors, seizures possible
  • >100 mg/kg: Potentially lethal
⚠️ Disclaimer: This calculator provides estimates based on average methylxanthine content. Actual content varies by brand. Individual dogs may be more or less sensitive. When in doubt, contact a veterinarian.

📚 References

  1. Merck Veterinary Manual. Chocolate Toxicosis in Animals. Link
  2. ASPCA Animal Poison Control Center. Methylxanthine toxicity thresholds: Mild signs at 20 mg/kg, cardiotoxic at 40-50 mg/kg, seizures at ≥60 mg/kg.
  3. Gwaltney-Brant S. Chocolate intoxication. Veterinary Medicine. 2001;96(2):108-111.
  4. Theobromine Half-life: 17.5 hours in dogs. Signs may persist 24-72 hours in severe cases.
  5. LD50: 100-200 mg/kg for both theobromine and caffeine in dogs.