In terms of safety, B12 is naturally occurring in the body and therefore (even in large doses) is relatively safe
Chan AT, Ogino S, Fuchs CS (2009) Aspirin use and survival after diagnosis of colorectal cancer
These regions were chosen because of their putative role in the neural mechanisms of ME/CFS and long COVID, in particular with regard to the integration of information from various levels [33, 34], with pgACC key for emotional regulation and autonomic integration, and dACC - for cognition [35, 36]
362 Additionally, copper ionophores or copper-ligand complexes (e.g., elesclomol) are being explored to selectively induce cuproptosis in tumor cells with active mitochondrial metabolism
In addition, products from such vendors may contain impurities or harmful chemicals, increasing the risk of adverse effects