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 vitamin b2 (riboflavin) works quietly behind the scenes to support energy, skin, vision, and overall cellular health , a small nutrient with a big impact on your everyday wellness , #healthconscious 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 You Need More Riboflavin with G6PD Deficiency! G6PDHelp.com