Vomiting is usually the first sign of toxicity and then in 30-60 minutes hypoglycemia can occur. The signs of hypoglycemia can be lethargy, ataxia (stumbling around), collapse, and seizure. In cases where gum with Xylitol was ingested the hypoglycemia may be delayed for up to 12 hours. In severe overdoses some dogs do not display the signs of hypoglycemia prior to the onset of liver failure. Instead lethargy and vomiting occur 9-72 hours after exposure. They may develop small spots of bleeding on the skin and mucus membranes like gums, larger spots of bleeding may also be seen on the skin and bleeding in the stomach.

What should you do if your dog does ingest Xylitol?

Time is of the essence. Immediately bring your pet to the veterinarian and let them know which item contained Xylitol. Remember how much your pet consumed (always estimate on the high side because it's better to be overly cautious at this point). Your veterinarian will want to treat your dog with dextrose (a type of sugar) so that they do not go into hypoglycemic shock. They will also treat the pet for liver disease if enough Xylitol is ingested.