can you take glutathione as a supplement 14 Benefits for Your Body and Health Best Glutathione Supplement | 4

Although SYNCRIP has been implicated in tumorigenesis across several cancer types, the role of SYNCRIP in GBM pathogenesis and ferroptosis regulation remains largely unexplored

If the cause isn't dietary then it is an absorption problem so you need to find another way of replenishing B12 initially

10.1136/gutjnl-2012-303207 Gut

During the fermentation process of these foods, biochemical reactions are triggered by multiple microorganisms that result in the release of vitamins, amino acids, enzymes, exopolysaccharides (EPS), SCFAs, organic acids, phenolic compounds, and bioactive peptides, among others, which provide potential benefits on human health (Dalile et al., 2019

Long-term consistency is key to supporting healthy glutathione levels.