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These medicines include certain heartburn medications, proton pump inhibitors, diabetes medications (such as Metaformin), and H2 blockers
One study found that high doses of oral B12 (1,000 mcg daily) could provide adequate absorption even in the presence of intrinsic factor deficiency
What is a B12 Shot
Natural sources rich in B12 tend to be derived from animal foods, so anyone following a vegan or vegetarian diet may need to supplement
Find the best time to take B12 supplements here
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