glutathione half life in body 9 Health Benefits of Toxicity of Glutathione-Binding Metals: A

In addition, metallothionein 3 (MT3) can extract Cu 2 + from amyloid- or -synuclein complexes and facilitate its reduction to Cu + , a property attributed to its flexible N-terminal -domain containing a unique threonine insertion at position 5 that distinguishes MT3 from other metallothionein isoforms 195,196

Because your body does not readily store excess amounts, toxicity from B12 is very unlikely, even at the higher doses used in injections

A common approach uses 0.25mg in the morning and 0.25mg in the evening, maintaining more consistent tissue levels throughout the day

However, significant challenges remain, including the synthesis of stable tripeptides with good tissue penetration, insufficient understanding of their mechanisms of action, the scarcity of studies in larger animal models and human trials, and the lack of direct head-to-head comparisons with larger peptides [75, 95]

Your body produces it naturally, and its found in your blood and tissues