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With physiologic (ie, 1 to 2 mg) doses of oral vitamin B12, the vitamin is absorbed by a process dependent on intrinsic factor
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For instance, you might look at liver-protecting lipotropic compounds with B12
What are the Benefits of Vitamin B12 Injections
Clinical laboratories generally define vitamin B12 deficiency as a serum level below 148 pmol/L (approximately 200 pg/mL)
The more magnesium retained by the body after loading, the greater indication of a functional deficiency
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