Riboflavin (Vitamin B2): MTHFR and FMO3 SNPs Genetic Lifehacks Role of riboflavin in energy production and redox reactions Glutathione Synthase an overview ScienceDirect Topics The Krebs cycle is the central engine of cellular energy metabolism. It's where your body gets most of its energy from food. If you are low in any of these B vitamins, Elemental Selenium and Vitamin B2 (riboflavin) are essential for glutathione use and recycling. Selenium is really low in Australian soils, and people are commonly deficient. Signs of low B2 are blood Riboflavin an overview ScienceDirect Topics