Vitamin B12 Injections | B12 injections
US$ 27.87
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Description
[DOI] [PMC free article] [PubMed] [Google Scholar] 109.Fredericks G.J., Hoffmann P.R
J Neural Transm (Vienna)
6a) 110,111
Kliegman J
For naturally occurring B12 in food, the presence of gastric acid, pepsin, and intrinsic factor is essential for liberation and absorption
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