D-Ribose is pentose sugar found in ribonucleic acid. It is used to relieve anxiety and stress. It also has anti-depressing properties. D-ribose is present naturally in all living cells. Though it is not an essential nutrient, as the body can make it naturally, but it is very essential for life. D-Ribose is basically a solid, sweet, water-soluble matter, and is sometimes called just ribose. D-ribose is ingested in the food we eat. Nutritional foods like brewer’s yeast that are high in RNA content are excellent sources of D-Ribose. D-Ribose supplements increase the rate of generation of ATP, increasing exercise performance and enhancing muscle growth.