This is the most common route for B12 in a clinic, usually into the deltoid muscle of the upper arm
NAD, a form of niacin or vitamin B3, is a metabolic co-enzyme found in all living cells with more than 100 functions in the human body
Under conditions of metabolic stress, it migrates to the cell nucleus, where it activates a suite of genes governed by AMPK (AMP-activated protein kinase), the master cellular energy sensor
It means the responsible way to consider it is with a physician who'll tell you what we know, what we don't, and whether it makes sense for your specific situation
Once the vitamin B12 storage is exhausted, the symptoms creep in, but the affected person wont notice the subtle changes