PepsiCo's Rockstar Energy introduces Rockstar Focus, a zero sugar, calorie-free beverage that features a boost of caffeine intended to improve focus and cognition.

Rockstar energy drink that has 160mg of caffeine and 63mg of sugar per serving. Bang energy drink that has 300mg of caffeine with zero sugar and is calorie-free.

Or in Rockstar Pure Zero to get the same great Strawberry Peach taste without the sugar and at only 20 calories. No matter which you prefer, each can contains 240mg of caffeine to deliver energy ...

Rockstar is bolstering its zero-sugar energy drinks offer with a range of fruity variants. Called Refresh, it comprises Strawberry & Lime and Watermelon & Kiwi. Each 500ml can provides 80mg vitamin C, ...