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A member asked:
B-12 was 284. taking daily 500 mcg b12 supplement, 3 months later 486. taking 3 days /week , 4 month, got it 411. which dosage should i continue.?
2 doctors weighed in across 2 answers
If there was: A documented deficiency, i would like to see the level definitely above 400. The higher dose is probably better for now.
Answered 4/18/2015
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More: Aim for serum level of 800 or higher. If oral dosage still does not achieve that after you increase whatever doses you are taking, you may need injections. Try taking them everyday instead of three times a week. Also double the dose.
Answered 12/28/2012
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