Corvalen M D-ribose is a useful dietary supplement for those patients that want to restore energy and support the symptoms of fatigue with the added benefit of magnesium and malate to help relieve occasionally sore muscles. D-Ribose (or ribose) is the backbone of human energy production. Taking it daily was shown to increase energy an average of 61% in a research study by world-renowned energy expert Dr. Jacob Teitelbaum. Ribose is made in our bodies’ cells, but this process is slow in heart and muscle tissue. Although ribose is present in all living matter, only a small amount can be ingested through the diet. In clinical studies, providing supplemental ribose has been shown to significantly improve endurance during strenuous exercise, shorten recovery time, reduce cramping and soreness, and reduce fatigue in people suffering from energy depletion.