Ribose occurs naturally in all living cells. It is a simple sugar that begins the metabolic process for ATP production. D-Ribose works synergistically with, & enhances the benefits of, creatine supplements.* NOW sells creatine in powder, capsule & tablet form. Do Not Eat Freshness Packet. Keep in Bottle. As a dietary supplement, take 2 to 6 Vcaps® daily, prior to exercise. Serious athletes may want to double the dosage during training. Consider taking this product in combination with NOW® Creatine, Co Q10 & L-Carnitine. Cellulose (capsule), Magnesium Stearate (vegetable source) & Stearic Acid (vegetable source).