why is my b12 injection not working What You Need to Know About Vitamin Why Do You Need B12

[2] However, elevated MMA is not conclusive, as it is seen in people with B 12 deficiency, but also in elderly people who have renal insufficiency, [28] and elevated homocysteine is not conclusive, as it is also seen in people with folate deficiency

The two groups were split in precisely the same way and received the same interventions

B Vitamins: Functions and Uses in Medicine

J Intern Med

Administered subcutaneously, its injectable form is rapidly absorbed and distributed to metabolically active tissues, where it specifically binds and inhibits NNMT catalytic activity without interfering with other enzymes in the nicotinamide pathway or NAD+ synthesis