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Data last updated 07/07/2026
Oral supplements have to pass through the digestive system and may not be absorbed efficiently, especially in people with gastrointestinal conditions like celiac, Crohns, or gastritis
Take it later the same day, or skip it and resume the next morning rather than doubling up
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B-12 injections provide several health benefits, particularly for those with a deficiency of this vital nutrient
Pay only after provider approval
Oral supplements may be sufficient if: You have a mild deficiency detected in a blood test
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