Rockstar Energy has launched a new “2 for £2” price-marked pack (PMP) proposition across its range. The new multi-buy PMP aims to boost sales and drive basket spend by offering energy drink customers ...

Waitrose director of technical and corporate social responsibility Simon Moore said: "As a responsible retailer we want to sell these ... Relentless and Rockstar energy drink brands.

Although Monster included common energy-drink ingredients, like B vitamins and taurine, it had a lower amount than some of the other drinks, like Rockstar. Taste: Out of all the energy drinks ...