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When someone is genuinely deficient, they may notice improvement in energy or mental clarity within a few days, though this varies from person to person and is most likely in people who were low to begin with
There are three main types of vitamin B12 for shots: cyanocobalamin , hydroxocobalamin , and methylcobalamin
B12 injections can be administered in different dosages depending on an individuals specific needs
Start with 50mg daily for the first week to assess how your body responds
Self-injecting is easy enough
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