Pure d-Ribose is an all-natural, five-carbon sugar that's important for producing Adenosine Triphosphate (ATP), the primary source of energy for all of our cellular processes. While our bodies naturally produce Ribose, it's often a slow process, and exercise can quickly deplete energy reserves within muscle tissue. Amp up your body before your next workout. Ribose supports healthy energy levels, promotes muscle endurance, and shortens recovery time following intense exercise. Dissolve 1 teaspoon of Ribose into your next drink or smoothie, and enhance your energy with Ribose. Each teaspoon provides 3 g of pure d-Ribose. Each single-serving packet provides 5 g of pure d-Ribose.