Mtn Dew Soda, Zero Sugar 2 LZero sugar dew. 0 calories per 12 fl oz serving. Zero sugar. Caffeine Content: 68 mg/12 fl oz. New! Bottled under the authority of Pepsico, Inc. MountainDew.com. We're here to help. MountainDew.com or 800.433.2652. Please recycle.