By Sophie Borland PUBLISHED: 16:59 EST, 8 March 2012 | UPDATED: 11:08 EST, 10 March 2012 Coca-Cola and Pepsi have been forced to change their recipes in America to avoid having to put cancer-warning labels on their cans - while the drinks in Britain stay the same. There were concerns that one of the food-colouring ingredients may cause tumours in mice - although there was no evidence of a similar risk for humans. Nonetheless both manufacturers have altered their recipes for drinks sold in America and they now contain far less of the offending chemical. Always coca-cola: The company are adjusting their colouring formula to dodge having a cancer label on the product
@highlight
Both firms to alter the way caramel colour is produced
@highlight
Changes will take place in the U.S
@highlight
But not in UK as the drinks meet European safety rules
America
America
U.S
Over the next few weeks they will roll out the new versions across the rest of @placeholder.