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The National Institutes of Health Office of Dietary Supplements has not set a Tolerable Upper Intake Level for B12 precisely because no reliable evidence of harm from high intakes has been established in healthy people
Judging the protocol too early
Consult your provider before starting if you have diabetes, thyroid disorders, or cardiovascular conditions
This method helps symptoms improve fast and brings vitamin B12 levels back to normal
Kent Holtorf, a physician with medical credentials from UCLA
( 11 ) However, if youre severely deficient in Vitamin B12, it may take several weeks to fully restore your levels and feel the cumulative benefits
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