do blood glutathione levels reflect tissue levels liver brain Noninvasive monitoring of hepatic depletion through fluorescence imaging and testing Glutathione in the Brain
Description
It may just be more expensive

Patients typically receive injections once or twice weekly for the first two weeks, followed by monthly maintenance doses, making the treatment cost-effective for those requiring consistent B12 supplementation

Analysis of lung cancer-related genetic changes in long-term and low-dose polyhexamethylene guanidine phosphate (PHMG-p) treated human pulmonary alveolar epithelial cells

Zhao YJ, Lam CM, Lee HC

The microglia receptor protein TREM2 is essential for protective innate immune responses against herpesvirus infection in the brain

Immunopathology of the female reproductive tract and mammary gland