inject vitamin b12 intramuscular or subcutaneous How to self-inject - Overview How to Give B12 Injections

By restoring NAD+ where NNMT had been depleting it, 5-Amino-1MQ aims to flip stubborn, storage-mode fat cells back toward an active, energy-burning state

A test helps confirm whether B12 is actually the issue and whether there may be other causes of fatigue

Results are typically slower and less noticeable compared to injections

In other words, we cant directly extrapolate recommendations for vegans from the trials in the graphs above except to know that 500 g per day is enough for vegans based on Crane, 1998

PubChem (2026) 8

Polycythemia Vera: Use with caution as vitamin B12 may increase red blood cell production