Dr. Smoothie Strawberry Acai Refresher Concentrate is one of the very popular Refresher flavours at Cupper’s. Dr. Smoothie Refreshers are made from fruit juice, pure cane sugar and Stevia, and are lightly caffeinated with green coffee bean extract (click here for more info on green coffee bean extract). Each Refresher concentrate has the amazing fresh flavours you want with a natural boost of energy. They can be blended with regular still water, or use sparkling water for a bright, (dare we say) refreshing, thirst-quenching beverage. There’s no artificial flavours or preservatives, and they’re vegan, fat-free, and gluten-free. Each bottle holds 46 ounces of concentrate which makes fifteen 12 ounce drinks, each with 24 mg of caffeine. It just doesn’t get much better… or more refreshing!