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, and enhances the benefits of, creatine supplements.* NOW sells creatine in powder, capsule and tablet form. Contains no:  salt, starch, yeast, wheat, gluten, soy, milk, egg, shellfish or preservatives. Vegetarian/Vegan Product. Caution:  Do Not Eat Freshness Packet Enclosed. This product is sold by weight not volume. Store in a cool, dry place.  Please Recycle. Bioenergy RIBOSE™ is a trademark of Valen Labs, Inc.  Use of ribose is licensed by Valen Labs, Inc. under U.S. Patents 6,159,942; 6,534,480; 6,218,366; 6,339,716, and other U.S. and foreign patents issued and pending.