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The systematic review protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO), registration number: CRD42024554513 (Available from) ( 2.2 PICOs question The primary research question addressed in this review was: What is the effectiveness of sublingual/oral administration of Vitamin B12 alone or compared to other forms of administration (e.g., intramuscular injection)?
Potential benefits: Extends beyond 30 days Convenient pre-measured doses Significant risks: Ice crystal formation can damage peptide structure Unknown potency loss during freezing/thawing No clinical data supporting this practice Recommendation: Not advised
Primary site: Inject subcutaneously along the lateral (outer) joint line
Research Use Limitation Used solely for laboratory and in vitro research Not approved for human consumption Not approved for veterinary use Not intended for diagnostic purposes Not intended for therapeutic applications Not permitted for clinical administration For research use only Independently analysed by Liquilabs s.r.o
Vitamin B12 is a water-soluble nutrient essential for red blood cell production, DNA synthesis, and energy metabolism
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