Check the risk of grape or raisin poisoning for your dog
Calculate the poisoning risk from grapes or raisins for your dog
EMERGENCY? If your dog has eaten grapes or raisins, contact a veterinarian IMMEDIATELY! This calculator is only for initial assessment and does not replace veterinary advice.
Important: Raisins are 7x more concentrated than grapes and therefore particularly dangerous! 1 grape ≈ 5g, 1 raisin ≈ 0.5g. The toxic threshold is about 19.6 g grapes per kg body weight, but even smaller amounts can be dangerous.
1 grape ≈ 5g
1 raisin ≈ 0.5g (7x more toxic!)
Symptoms of grape poisoning:
• Vomiting (often within 2-6 hours)
• Diarrhea
• Lethargy and weakness
• Loss of appetite
• Abdominal pain
• Reduced urine production (sign of kidney failure)
Timeframe: The first 24-48 hours are critical! The sooner treatment begins, the better the prognosis.
The toxic threshold is approximately 19.6 g of grapes per kg body weight. For a 10-kg dog, that is about 200 g of grapes. Raisins are about 7 times more concentrated, so only 2.8 g/kg is needed. Since individual sensitivity varies greatly, any ingestion should be treated as an emergency.
Raisins are dried grapes. Through dehydration, the toxic substance (likely tartaric acid) becomes concentrated. 100 g of raisins equals about 700 g of fresh grapes. Even small amounts of raisins can cause acute kidney failure in dogs.
Within 6-12 hours, vomiting, diarrhea, and loss of appetite occur. Without treatment, acute kidney failure can develop within 24-72 hours. Contact your vet immediately. Within 2 hours, the vet can induce vomiting and administer activated charcoal.