It is difficult to give a one-size-fits-all answer to the question, "How long does it take for B12 injections to work." It is possible for some individuals to notice the improvement in their symptoms right away, whereas, for others, it may take additional injections to achieve optimal health
Always inject separately
Why B12 is so Important Vitamin B12, also known as cobalamin because it contains the mineral cobalt, supports many vital metabolic functions, including: Synthesis of DNA
At first, you might get shots several times a week
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Bacteriostatic Water 10mL Bacteriostatic water (0.9% benzyl alcohol in sterile water for injection) is an essential reconstitution solvent for lyophilised research peptides, hormones, and compounds