Hyperpigmentation inside the mouth due to low B12 levels may appear as bluish or dark discoloration
The study appears online in the journal Nature Communications
Pregnancy and breastfeeding: No safety data
They are typically tiny, uncontrolled case reports from clinics that often have a financial conflict of interest, they sell the very substance they are promoting
Why would you try to improve your health with something that requires the depletion of other crucial substances
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