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Learn more: What to Expect from an Iron Infusion Without treatment, a vitamin B12 deficiency can cause pernicious anemia

We are entirely dependent on dietary intake or supplementation, and even with adequate dietary intake, absorption can be impaired by a range of factors including age-related changes to stomach acid production, certain medications, and digestive conditions

This review study highlights the biological effects of different NAD+ boosters as well as the unique benefits of direct NAD+ administration over oral precursors because it bypasses gut and liver metabolism

The Vitamin D Shot is for patients with documented low vitamin D who want a higher dose than oral supplements deliver