People with pernicious anemia, or those at risk of developing it
Grossman E
Studies have demonstrated SNARE complex inhibition in vitro, concentration-dependent wrinkle reduction, good stability and bioavailability, and compatibility with various cosmetic formulations
There are anti-melanogenic effects of glutathione
10.1016/s1357-4310(00)01810-4 35 MurakamiS
The authors themselves described it as a small preliminary study.[15] A 2025 pilot report described intravenous administration to two healthy adults at doses up to 20 mg, with no measurable changes in cardiac, hepatic, renal or thyroid biomarkers and no reported adverse effects.[16] Two individuals cannot characterise uncommon reactions, immunogenicity, long-term toxicity, reproductive safety or oncological risk