Energy Source: Natural theine from fresh whole organic green tea leaves Energy Source: Chemical caffeine added to powdered green tea Effect: Smooth, steady energy Effect: Mildly jittery energy Side Effects: None Side Effects: Mild stress, shakiness, acid stomach, flushing, irritability, crashing Sweetener: Real blueberry juice, pure Concord grape juice Sweetener: Cane sugar Flavorants: No added flavors Flavorants: Organic "flavors" Food Value: Full serving of fruit Food Value: Sugar calories Health: Nutritious antioxidants Health: Questionable Largest cost: Ingredients Largest cost: Packaging