Each Dunkin Donuts Refreshers contains between 30-90mg of caffeine per medium serving, derived from green tea, along with B vitamins for an added energy kick. They are pre-sweetened with a fruit concentrate, keeping the total calorie count under 200. While Dunkin’ focuses on natural flavors, they avoid artificial dyes, aligning with a healthier approach compared to traditional sodas. If you’re looking for a guilt-free way to enjoy a burst of flavor and a boost, Dunkin Refreshers are an excellent choice.