It is not approved for human or veterinary consumption
Advanced Dose : A higher-end dose, typically reserved for experienced users, those with higher body mass, or those with aggressive goals
DeTure MA, Dickson DW (2019) The neuropathological diagnosis of Alzheimers disease
Conditions include alcoholic liver disease, viral hepatitis, cirrhosis, and primary or metastatic liver cancer Renal dysfunction : Impaired kidney function reduces B12 elimination, causing accumulation even with normal intake Haematological conditions : Myeloproliferative neoplasms, chronic myeloid leukaemia, polycythaemia vera, and hypereosinophilic syndrome increase transcobalamin production, elevating total serum B12 Laboratory interference : Macro-B12 (immunoglobulin-bound B12) and assay interference can cause spuriously elevated results without true excess In clinical practice, unexplained hypercobalaminaemia should prompt investigation for underlying disease, particularly in patients without obvious supplementation history
AAs we have seen, this mainly gets converted to cystine and is of little use in healthy individuals or those suffering from a chronic undersupply of glutathione due to aging or illness