b12 injection do Vitamin Injections — Anupa Wellness Best Vitamin B12 Injection Sites:
Description
The frequency of B-12 injections depends on the severity of the deficiency and individual health needs

There are dangers in taking vitamin B12 supplements if you have an undiagnosed deficiency of vitamin B12 caused by pernicious anaemia as this prevents vitamin B12 being absorbed and so requires treatment by injection.
Anemia is another possible outcome

Green DJ, Orgun NN, Jones JC, Hylarides MD, Pagel JM, Hamlin DK, et al

Niacinamide appears in some preparations
