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 Table 3 from Riboflavin requirements of Filipino children and non pregnant, pregnant and lactating women: Studied by the erthrocyte glutathione reductase activation test. Semantic Scholar Relumins 1650mg L Glutathione Complex with Namibia Ubuy Vitamin B2 (Riboflavin) Energy, Skin & Vision Support REVIV