This is especially true for people who were low on B12 to begin with
While glutathione is available in oral supplements, IV infusion offers distinct advantages for therapeutic support: The glutathione is delivered directly into your bloodstream, ensuring 100% bioavailability and bypassing the digestive system where absorption can be variable
[DOI] [PMC free article] [PubMed] [Google Scholar] 24.Efficacy and safety of tau-aggregation inhibitor therapy in patients with mild or moderate Alzheimer's disease: a randomised, controlled, double-blind, parallel-arm, phase 3 trial
Hock, C., Heese, K., Hulette, C., Rosenberg, C
And, another one proved that the use of Methyl B12 (injected at 75mcg/kg every 3 days) and folate (at 400mcg twice a day) can significantly improve cysteine and glutathione levels, though not fully up to the levels shown in typical children