Coke Zero contains 85 mg of aspartame per 355 mL can, combined with acesulfame potassium for sweetness without calories. Aspartame is safe per global health authorities and widely used in sugar-free drinks. This article explores aspartame's role, safety, and comparison with other sweeteners in Coke Zero.

Coke Zero is a sugar- and calorie-free soft drink sweetened predominantly with the artificial sweeteners aspartame and acesulfame potassium. This combination ensures a taste profile close to original Coca-Cola while offering a healthier alternative to sugar. Aspartame and Ace-K are FDA-approved, widely tested sweeteners with an excellent safety record, although some consumers may experience sensitivity. Coke Zero differs from Diet Coke by using the dual sweetener blend for a smoother flavor. As the sugar-free beverage market grows, these sweeteners remain key in delivering great-tasting, low-calorie drinks.