Enjoy the bold, refreshing taste of Diet Pepsi without the caffeine. Now aspartame-free, this zero-sugar cola delivers the same crisp and smooth flavor you love, with none of the caffeine or calories. Whether in cans or bottles, it’s the perfect drink for any time of day when you want to unwind and refresh without the buzz. Best served ice-cold for maximum enjoyment. Pepsi - the bold, refreshing, robust cola. Live For Now.