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Some people do not absorb B12 efficiently due to age, gastrointestinal issues, or insufficient intrinsic factor, a protein required for B12 absorption
Vitamin B-12 and the Gastrointestinal Microbiome: A Systematic Review
Reusing them introduces contamination risk into both the vial and the injection
We also recommend keeping the injection site clean and avoiding scratching or rubbing it to prevent irritation or infection
Adjust your technique or consult with someone experienced in subcutaneous injection s
Generally, when treating a B-12 deficiency, youll get a 1,000-microgram shot every day or two for the first week (2)
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