US$ 20.96
b12 injection treats what Best Vitamin Site: Administering B12 Shots Vitamin B12 Injection at a
Description
Elevated methylmalonic acid or homocysteine with normal-ish b12 suggests functional deficiency requiring supplementation

It also plays an important role in maintaining proper immune function

doi: 10.1186/s12917-014-0175-x

What should I do if I feel sick from the altitude or the exertion

PMID: 38797248 9 Vitamin B12 Deficiency: Recognition and Management
