indication for b12 injection Are Shots Safe? Royal Palm Beach Medical Group What are the benefits of

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Peer-reviewed studies have documented its role in improving diabetic neuropathy, nerve regeneration, and sleep regulation via melatonin pathways

Proton pump inhibitors (acid blockers) and over-the-counter non-steroidal anti-inflammatory agents can change the environment of the GI tract predisposing to nutrient deficiencies Unfortunately, that isnt an exhaustive list, but it does give you a pretty good idea of why you should be concerned about your vitamin B12 levels

This study has some limitations, such as the fact that the search was limited to PubMed and to the last 20 years