Question: how many grams of xylitol will kill a dog?
Answer: Only 0.1 gram of xylitol per 2.2 pounds of body weight can cause hypoglycemia, while only . 5 grams can cause liver failure. Since a piece of sugarless gum can have between 0.3 and 1 gram of xylitol, it will only take a few pieces to poison a dog. There are 190 grams of xylitol in 1 cup of the sweetener.