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GGT transfers the -glutamyl residue of glutathione to amino acid acceptors (the best acceptor being cystine), releasing -glutamyl peptides and cysteinyl glycine
However humans are autotrophic for cysteine due to the reverse trans-sulfurylation pathway, meaning that cysteine is not considered to be an essential amino acid
Any significant changes should be reported straight away to your healthcare physician
doi: 10.12688/f1000research.20906.1 139
When you swallow a standard glutathione pill, the enzymes in your stomach often break it down before it can reach your bloodstream
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