Naturally flavored. 15 g Protein. 70 Calories. 0 g Sugar. Total Caffeine Content: 125 mg per serving. Lactose free. Gluten free. Protein2o with Energy combines 15g of premium whey protein isolate with an energizing boost of caffeine so you can power through your day. Grab a bottle and get the protein you need plus an added kick of long-lasting energy. Game on! Whey Protein has show positive effects in: Muscle building in association with resistance training. Boosting energy before exercise. Reducing appetite. drinkprotein2o.com. Facebook. Twitter. Instagram. (at)Protein2o. PET 1 (BPA free).