still tired after b12 injections Why Do I Feel Worse My Injection? Understanding Post-Injecti – Oxford Origins Why do I feel worse
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A common protocol involves administering 1,000 mcg of B12 weekly for 4 to 8 weeks, depending on the deficiencys severity and the patients response

[DOI] [PMC free article] [PubMed] [Google Scholar] 144.Jenkins-Kruchten AE, Bennaars-Eiden A, Ross JR, Shen WJ, Kraemer FB, Bernlohr DA
Although cyanocobalamin is more readily absorbed, much of it is excreted through the urine before it can reach the cells Cyanocobalamin vs Hydroxocobalamin In comparison to hydroxocobalamin, cyanocobalamin has a significantly worse absorption rate and storability, which is why today mostly hydroxocobalamin is used in B12 injections
