glutathione assay kit cs0260 Kit/Reagent Review The product Glutathione peroxidase (GPx) activity assay
Description
& White, F

Its up-regulation is a part of adaptive mechanisms of the cells

Several studies show it binds to the GABA-A receptors and increases GABA binding

The use of human keratinocytes and human skin models for predicting skin irritation
In other words, they help the good bacteria (the probiotics) in your gut flourish and make them more effective

I don't see how you are getting that only 5mcg is lost daily: if you have injected say 1000 mcg of B12, most of it is peed out within a few days