Dog Hospital

A sugar substitute found in a variety of sugar-free and dietetic cookies, mints and chewing gum is proving highly toxic, even fatal, to snack-snatching dogs.

Xylitol, popular in Europe for decades but a relative newcomer to the U.S. alternative-sweeteners market, can be “very, very serious” to dogs when ingested, says Dana Farbman, spokeswoman for the Animal Poison Control Center of the American Society for the Prevention of Cruelty to Animals.

“It doesn’t take a whole lot (of xylitol), and the effects are so rapid that the window of opportunity to treat the dog is extremely small,” Farbman says.

Within 30 minutes of consuming a small amount of a xylitol-sweetened product, the ASPCA says, dogs can experience a dramatic drop in blood sugar, and they usually begin vomiting, become lethargic and can have difficulty standing or walking. Some have seizures, develop internal hemorrhaging and lesions and suffer liver failure. As few as two or three sticks of xylitol gum could be toxic to a 20-pound dog, the ASPCA says.

Immediate and aggressive veterinary treatment, which includes glucose drips and IV fluids, has proved effective in many cases.

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