sinha et al. 2018 liposomal glutathione study Frontiers Tri-Fortify® Liposomal Glutathione - Researched
Description
Beginning at 300mcg allows assessment of response without overshooting the necessary dose

The half-life is the amount of time it takes for half of the medication to be cleared from your system, or more simply, how long the drug continues to work after you take it

Zhang QJ, Du CX, Tan HH, Zhang L, Li LB, Zhang J, Niu XL, Liu J (2015a) Activation and blockade of serotonin7 receptors in the prelimbic cortex regulate depressive-like behaviors in a 6-hydroxydopamine-induced Parkinsons disease rat model

To see how it fits into the broader antioxidant network, read Does Glutathione Regenerate Vitamins C and E