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Summary of the findings The current article evaluated 13 studies, of which eight were randomized clinical trials comparing different administration routes of vitamin B12 in patients with vitamin B12 deficiency
These reactions typically resolve with continued use as the skin acclimates, or with dose reduction
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This is the main factor for how long a B12 injection takes to work, offering a significant advantage over oral supplements, which must be broken down by the digestive system before they can be distributed throughout the body
TB-500 is dosed less frequently, typically once or twice per week during a loading phase and once every two weeks during maintenance, reflecting its longer half-life and systemic distribution pattern