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updated 3/8/2012 2:30:20 PM ET 2012-03-08T19:30:20

Coca-Cola Co. and PepsiCo Inc. are changing the way they make the caramel coloring used in their sodas as a result of a California law that mandates drinks containing a certain level of carcinogens bear a cancer warning label.

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The companies said the changes will be expanded nationally to streamline their manufacturing processes. They are already in effect to comply with the California law.

Coca Cola and Pepsi say their drinks have always been safe and that their sodas will not taste any different.

A Food and Drug Administration spokesman noted that a consumer would have to drink more than 1,000 cans of soda a day to reach the doses administered that have shown links to cancer in rodents.

Pepsi, Coke, don't pose cancer risk, regulators say

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