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(PubMed) Shrubsole MJ, Shu XO, Li HL, et al
Each ingredient on its own is either Category A (B) or essential with no evidence of harm at normal levels (B, B, B) or Category C in very high doses (niacin)
The bodys ability to absorb B12 decreases with age and can be affected by certain medications and prescriptions
Vitamin B12 is one of the reasons for treatment after consulting a doctor Maintain healthy vitamin B12 levels to enjoy your daily activities with energy and health
K., Grfte, T., Greisen, J., Malmlf, K., Johansen, P
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