12/13/2012 01:40 pm ET

Brominated Vegetable Oil, Ingredient In Gatorade, Raises Concern

Flickr: rasdourian

Sarah Kavanagh and her little brother were looking forward to the bottles of Gatorade they had put in the refrigerator after playing outdoors one hot, humid afternoon last month in Hattiesburg, Miss.

But before she took a sip, Sarah, a dedicated vegetarian, did what she often does and checked the label to make sure no animal products were in the drink. One ingredient, brominated vegetable oil, caught her eye.

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