RIBOGEN MGSupports athletic performance Magnesium combined with D Ribose, the backbone of your DNA Helps alleviate fatigue and enhances performance Reduces muscle pain DETAILS D Ribose is a naturally occurring five carbon sugar that is found in all living cells. It is a building block of nucleic acids, which are the building blocks for DNA and RNA. It is also a precursor for adenosine triphosphate (ATP), which is the molecular currency of cellular energy,