is oral b12 as good as injections Vitamin vs. Supplements: Which Works Best? Compounded Cyanocobalamin (Vitamin B12) Injection

B12 injections supply vitamin B12 as methylcobalamin or cyanocobalamin, typically given intramuscularly into the deltoid, supporting red blood cell formation, myelin and nervous system health, and the metabolism of homocysteine, a process that can falter with vegan diets, malabsorption, or medications like metformin

This is where some researchers deviate from the one-vial approach

Following this, we recommend a maintenance B12 shot every 3-4 weeks to maintain B12 levels and support optimum wellness

On the other hand, those with methylation issues (MTHFR gene mutations carriers, for instance) do best on methylated B12, that is, methylcobalamin