what happens if b12 injections don& 39 permanent side effects after supplementing B12? : r/B12_Deficiency Vitamin B12 - PMC

Yes, habits strongly influence outcomes

People who have low B12 levels experience numbness and tingling sensations in their hands and feet

Sudden cardiac death in Long QT syndrome (LQTS), Brugada syndrome, and catecholaminergic polymorphic ventricular tachycardia (CPVT)

Note: the specific combination of these three compounds as a blend has not itself been the subject of published clinical or preclinical trials the blend is offered as a research convenience product, and any pathway interactions between the three components in combination should be treated as an open research question rather than an established finding