b12 injections im or sq How to Inject Vitamin How to Self-Inject Vitamin B12
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Other types, like hydroxocobalamin, might be used for different reasons

For confirmed significant deficiency, a loading protocol with more frequent injections may be recommended initially

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This is the foundation of scientific integrity and allows researchers to generate reliable and reproducible data for publication
In general, patients with an irreversible cause should be treated indefinitely, whereas those with a reversible cause should be treated until the deficiency is corrected and symptoms resolve

Sleep patterns and mood may also be affected temporarily