Quick question why do people talk about B12 injections versus ingestible pills? I wish I injections. I do not have the cash for that little backstory. I've been eating vegan style for Methylcobalamin vs Cyanocobalamin: What's the Difference? Hydroxocobalamin vs. Methylcobalamin (B12) for MTHFR Methyl Life Supplements B12 Injections vs Tablets: What You Need to Know How Many B12 Pills Equal a Shot? San Diego Regenerative Medicine RMB Institute NAD+ vs. B12: What's the difference? NAD+ supports cellular energy, metabolism, and longevity at the mitochondrial level. B12 helps with red blood cell production, nerve health, and energyespecially if you're deficient.