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Authors conclusions: Low quality evidence shows oral and IM vitamin B 12 having in terms of normalizing serum vitamin B similar effects 12 levels, but
the clinical relevance of this finding in humans is unknown, and in UK and EU prescribing information this is noted as a precaution rather than a formal contraindication but individuals with a personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia type 2 (MEN2) should discuss this with their doctor
The combination of adequate B12 with microdose tirzepatide supports the neurological aspects of longevity protocols specifically
Methylcobalamin vs Cyanocobalamin: Choosing the Right B12 Injection When youre looking into B12 injection therapy , picking between methylcobalamin and cyanocobalamin is key
doi:10.3389/fneur.2014.00227
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