@faye here are all of the ingredients: carbonated water, citric acid, natural flavors, potassium citrate, and potassium benzoate, aspartame, and acesulfame potassium.
If you’re referring to Aspartame : The U.S. FDA is one of the governmental agencies charged with safeguarding the American food supply. Upon approval of aspartame, the FDA concluded that it was safe for the general public including children, pregnant and nursing women, and diabetics.
According to the FDA, aspartame is one of the most thoroughly studied ingredients in the food supply. In fact, when approving aspartame, the FDA Commissioner noted: “Few compounds have withstood such detailed testing and repeated, close scrutiny, and the process through which aspartame has gone should provide the public with additional confidence of its safety.”