The question is never whether side effects exist, but whether the benefits justify them and whether those side effects are manageable in practice
Supplementing may support the levels already present in the mothers system, though direct impacts on milk concentration are still being researched
To improve overall hair health, some people turn to herbal remedies
Chapman PB, Hauschild A, Robert C, Haanen JB, Ascierto P, Larkin J, Dummer R, Garbe C, Testori A, Maio M, Hogg D, Lorigan P, Lebbe C, Jouary T, Schadendorf D, Ribas A, ODay SJ, Sosman JA, Kirkwood JM, Eggermont AM, Dreno B, Nolop K, Li J, Nelson B, Hou J, Lee RJ, Flaherty KT, McArthur GA, Group B-S (2011) Improved survival with vemurafenib in melanoma with BRAF V600E mutation
Once injected, B12 enters the bloodstream directly without requiring stomach acid, intrinsic factor (a protein necessary for B12 absorption), or healthy intestinal function