vitamin b12 injection vs tablets Injections vs. Oral Supplements: Which is Better? B12 Injections vs Oral Supplements:
Description
It performs best as an adjunct, not a replacement
doi: 10.1016/0002-9343(81)90392-2
Just be aware that there is high altitude (in Puno and Cusco) and some walking involved
A.Ramrez-ZamudioG
