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Once inside the cell, precursor amino acids are enzymatically processed and passed along to enzymes responsible for GSH synthesis beginning with cyclization and decyclization reactions to release the bound amino acid and present free Glu as the first substrate precursor for GSH biosynthesis

(Second on my list would be vitamin D, but its much harder to develop low vitamin D levels if you take a daily supplement, as I explain in this post

fosfatidylcholine)

However, the results of a trial conducted in Thailand in 2012, showed that liposomal tranexamic acid had no additional benefit compared to conventional tranexamic acid formulation that would be due to the small sample size of this study (Kanechorn et al., 2012a)