monthly b12 injections Vitamin B12: How Frequently Should I Get It? How Often Should You Get
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Step 3: Push the plunger in to add 10 mL of air to the vial and then draw out 10 mL of bacteriostatic water by slowly pulling the plunger back out

[DOI] [PubMed] [Google Scholar] 55.Roberts T
Vitamin B12 is water-soluble, and the body excretes excess amounts through urine rather than storing supraphysiological levels

Not effective for individuals with severe deficiencies

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