Under veterinary care, your dog can most likely recover from xylitol poisoning. However, ingestion of this chemical will require immediate attention. Monitor your dog and call the vet. Your vet will likely recommend bloodwork and possibly intravenous fluids. ChapStick tubes are small, but even a small amount of xylitol can cause serious harm to your dog. When possible, avoid purchasing products that contain this ingredient. Accidents happen, but xylitol ingestion can be a fatal mistake.