Weekly Ad Digital Coupons Browse the Aisles Favorites FAQs ⓘ Pepsi Cola, Diet 1.58 Qt0 calories per 12 fl oz serving. Sugar free. Very low sodium, 35 mg or less per 8 fl oz (240 ml). Caffeine Content: 35 mg/12 fl oz. www.pepsi.com. Product questions? 1-800-433-2652. Please recycle.