can i take b12 tablets as well as injections vs Pills: Richmond's Complete Guide Vitamin B12 Injection Dosage |
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[DOI] [PubMed] [Google Scholar] 10.Fildes A, Charlton J, Rudisill C, Littlejohns P, Prevost AT, Gulliford MC

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Int J Dev Neurosci
The way you take your B12 dramatically affects how much actually makes it into your system where it can do its job

[1] Because intrinsic-factor-dependent uptake in the distal ileum can be absent in conditions such as autoimmune gastritis, pancreatic insufficiency, or bariatric surgery, the intramuscular or subcutaneous route bypasses gastrointestinal barriers and reliably restores serum concentrations
