It has been widely studied for its association with tissue repair processes involving muscles, tendons, ligaments, and gastrointestinal tissue
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
For teenagers and young adults under 21 with severe injuries that have failed conventional treatment, REGEN might be considered under medical supervision
Not sure if this is mostly from change in diet or from the injections on their own, but it seems to be helping so far