Coca-Cola Co and PepsiCo Inc are making changes to the production of an ingredient in their namesake colas to avoid the need to label the packages with a cancer warning.
The changes will not alter the colas’ taste, color or formula, according to statements from both companies.
The change is meant to reduce the amount of a chemical called 4-methylimidazole, or 4-MI, which in January was added to the list of chemicals covered by California’s Safe Drinking Water and Toxic Enforcement Act of 1986, also known as Proposition 65.
High levels of that chemical have been linked to cancer in animals.
Earlier this week, the Center for Science in the Public Interest (CSPI), a U.S. watchdog group, said it found unsafe levels of the chemical in cans of Coca-Cola, Pepsi-Cola, Dr Pepper Snapple Group Inc’s Dr Pepper and Whole Foods Markets Inc’s 365 Cola.