Last week, Coke unveiled Enviga, a new tea it claimed will help you burn up to 100 calories a day. But it only took one day for some experts to dismiss the claims as ridiculous.

The maker of Coke, on Thursday said it has developed the new drink with Swiss food giant Nestle that speeds up drinker's metabolic rate thus helping them reduce weight. If a dieter drinks three cans of the "negative calorie" drink, per day, company scientists say, he or she could burn from 60 to 100 calories a day.

But experts say this is no diet in a can. Anyone who counts on Enviga for weight loss is "likely to be setting themselves up for disappointment," said David Sarwer, director of clinical services at the Center for Weight and Eating Disorders at the Hospital of the University of Pennsylvania in an article by the Philadelphia Inquirer.

Enviga makes its debut in New York and Philly in early November. I haven't decided whether to try it, but if you do, please let me know what you think.

-- Amanda Barrett, amNY.com