live on liposomal glutathione Supplement 1000MG + 750MG- Glutathione Liposomal with VIT C + Phospholipid Antioxidant Complex - Liver Detox and Immune Support Supplement - 120 Caps Glutathione (Liposomal)

A study found that giving 1000 mcg of B12 intramuscularly is common

Cyanocobalamin is also used to perform the Schilling test to check ability to absorb vitamin B 12.[13] Cyanocobalamin is also produced in the body (and then excreted via urine) after intravenous hydroxycobalamin is used to treat cyanide poisoning

References Aguirre J, Ros-Momberg M, Hewitt D, Hansberg W (2005) Reactive oxygen species and development in microbial eukaryotes

doi:10.1016/j.explore.2021.09.006 Originally published in 2021, this article has been revised and updated for accuracy and thoroughness.

By introducing certain microorganisms, fermentation can produce desired flavors and aromas, as well as enhance the nutritional value and shelf-life of foods

What all factors lead to depletion of glutathione from the body