A combination of malic acid with magnesium and vitamin B2 (riboflavin). All three of these nutrients are important for energy generation. Magnesium malate is a highly absorbable form of magnesium, involved in the Krebs cycle and the activation of nearly 80% of all the enzyme systems that are important for protein and carbohydrate metabolism. For additional benefit, may be used with Item no. 54760 L-Citrulline. The combination of L-citrulline and malate has been shown to enhance cognitive function and energy.