US$ 22.81
b12 test while on injections at Home - Safety Guide for Self-Administration Vitamin D and B12 Test:
Description
Heres the honest side-by-side

Oral supplements can be helpful, but theyre not as efficient as injections

Price: $45

The frequency in each phase is very different, so a single every X weeks figure does not describe the whole picture

Others may only need occasional boosters
