can b12 injections cause swelling Vitamin Injections: Good or Bad? Vitamin B12 Deficiency - Harvard

Better oxygenation means more endurance, less fatigue, and better overall performance in the gym or outdoors

Beneficial for Restricted Diets especially for those following vegetarian, vegan, or other restricted diets that may lack sufficient B12

The 1-methylnicotinamide product of NNMT may itself have biological activities (including potential insulin resistance-promoting effects), and reducing its production through NNMT inhibition may contribute to metabolic improvements

Therefore, the providers need to demonstrate that each injection contributes to meaningful clinical outcomes to ensure full reimbursement under these models