5-Amino-1MQ inhibits NNMT, an enzyme that consumes SAM and reduces NAD+ availability in fat cells
The vitamin can be stored in the liver for a long time, so it may take a few years for a deficiency to develop ( Summary Vitamin B12 is a water-soluble vitamin that plays an important role in brain function and red blood cell production
This can contribute to fatigue, weakness, light-headedness, and difficulty concentrating
Understanding bioavailability explains why injectable doses are measured in milligrams while topical concentrations use percentages
The study also reported changes in glucose tolerance, insulin sensitivity and circulating insulin
Online sourcing from research chem vendors poses risks of contamination, mislabeling, and inconsistent dosing