vitamin b12 nasal spray vs injection Comparison of the Efficacy of Oral... : Journal of Diabetology DTB Methylcobalamin (Vitamin B12) -

It also plays a role in maintaining the myelin sheath that protects nerve cells and ensures smooth nerve transmission

All doses fit in a single 1 mL insulin syringe at this concentration

In a randomized, double-blind, placebo-controlled trial in 2,919 participants (65 years) with elevated blood concentrations of homocysteine, supplementation with vitamin B 12 (500 g/day) and folic acid (400 g/day) for two years did not decrease the risk of osteoporotic fracture despite reductions in homocysteine (120, 121)

Vitamin B12 is an essential nutrient that supports energy production, brain function, and red blood cell formation

Thyroid diseases have also been known to be associated with vitamin B 12 deficiency [16, 17]