Pink Drink at Starbucks is called Strawberry Acai Refresher. It may have caffeine content because of the green coffee extract. Although instead of using water, the drink is mixed with coconut milk that results to the pink hue of the drink. Most of the time, the Venti size of this pink drink contain more caffeine content similar to the content of an espresso. Therefore to avoid the caffeine in this drink, you may want to order the smaller size instead.