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Vitamin B12 injections are far from the only way to get vitamin B12
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
Most people tolerate B12 supplementation well, even at doses significantly higher than the recommended daily amount
Because injections bypass the digestive tract, they may be preferred when absorption is the main concern
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