b12 tablets vs injections Vitamin vs. Supplements: Which Works Best? B12 Injections vs Tablets: What
Description
Fasted-state administration maximizes bioavailability by eliminating dietary nicotinamide competition for NNMT enzyme binding sites

The body can do this but many times the reason the deficiency exists is because there is some venerability with formation of methyldonors (like methylcobalmin)

Boosts Metabolic Efficiency 5-Amino-1MQ may improve metabolic efficiency by inhibiting the enzyme nicotinamide N-methyltransferase (NNMT), which regulates energy metabolism

Plasma levels of GHK-Cu decline from around 200 nanograms per milliliter at age 20 to approximately 80 nanograms per milliliter by age 60

I verify sources, protocol interpretation, and final judgments personally
