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Bioavailability: 1 to 2% absorbed passively without intrinsic factor Deficiency: only if GI absorption is intact Dosing: daily, high-dose oral Prescription: no, available OTC At home: yes Get a B12 injection prescription Not sure which format fits your situation
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These areas are chosen because they have large muscle masses and relatively few blood vessels and nerves, making the injection process safer and more comfortable for the individual receiving the injection
Before starting Vitamin B12 supplementations, a person should know if he or she is deficient in the vitamin
Laboratory utility of hCG and alpha-subunit measurements [PMID: 6283446] Laboratory literature summary: laboratory utility of hCG and alpha-subunit measurements
But for a meaningful number of them, the full picture turns out to be more complicated than a single hormone in a syringe
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