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Individuals with liver conditions, metabolic disorders, or those undergoing regular IV glutathione therapy should be especially cautious
Once it's been used, it's done
Plant Arch 19:10571060 Alam MA, Sarker MZI, Ghafoor K, Happy RA, Ferdosh S (2017) Bioactive compounds and extraction techniques
Neurochem Res 22:727733 Li X, Wallin C, Weber SG, Sandberg M (1999) Net efflux of cysteine, glutathione and related metabolites from rat hippocampal slices during oxygen/glucose deprivation: dependence on gamma-glutamyl transpeptidase
Separate high-dose oral b12 (1000 to 2000 mcg daily) or regular b12 injections (1000 mcg weekly or monthly) offer more reliable repletion
A double-blind study in chronic insomniac patients examined the compound's effects on sleep but did not yield a clean confirmation of benefit (PMID 1299794)
