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For a person who cannot absorb B12, the injection is a critical, life-sustaining treatment, not a voluntary supplement
These symptoms go off in a few weeks and wont disrupt long-term treatment
Professionals rely on high-grade components to achieve repeatable data points effectively
A serum B12 level between 300 pg/mL and 900 pg/mL is considered normal and levels above 900 pg/mL are considered high
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