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Without adequate levels of this vital nutrient, your bodys cells may struggle to get enough oxygen, impacting your mood, energy levels, and more

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Great value with the added benefit of B12, which helped dramatically reduce side effects for me

Signs of B12 deficiency: Oral B12 supplements require absorption through the gastrointestinal tract

Only answers with a level of agreement of at least 50% (as a lower bound of the 80% CI) were revised and used in the second round of the survey

[PMC free article: PMC8140678] [PubMed: 34046142] 17