Pepsi One One Calorie Cola. 1 calorie. Sweetened with Splenda brand. Smart choices. Made easy. Sugar free. Very low sodium, 35mg or less per 240 ml (8 fl oz). Caffeine content: 36mg/8 fl oz. For more information visit pepsi.com. Please recycle. Pepsi One is a smart choice among soft drinks because it has only one calorie, zero sugar and zero carbs per serving. Visit www.smartspot.com. Comments or questions, call 1-800-433-2652. www.pepsione.com.