NAD+ NAD+ (nicotinamide adenine dinucleotide) is a coenzyme that plays a critical role in cellular metabolism, DNA repair, and anti-aging processes
Adenosylcobalamin Less commonly used in injections
Full-text article Dimet-Wiley AL, Latham CM, Brightwell CR, et al
Typically, MIC B12 injections are administered once or twice a week for about three months
It is unclear exactly how much vitamin B12 a person would need to take to lead to hypercobalaminemia
according to the National Academies of Sciences, Engineering, and Medicine, absorption is approximately 50% at 1 mcg but falls to roughly 1.3% at 1,000 mcg