what does b12 injections do for the body Vitamin Aging and Longevity Best Vitamin B12 Injection Sites:
Description
Expected duration of vitamin B 12 deficiency With proper treatment, symptoms of vitamin B 12 deficiency begin to improve within a few days

The typical maintenance dose is 1,000 mcg administered IM once monthly

The tests for B12 are no different

UKAS and ISO 9001 accredited UK lab
It must be mixed with bacteriostatic water before any subcutaneous use
[PubMed] [Google Scholar] 14.World Health Organization Expert Committee on Physical Status
