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Typically, doctors prescribe a loading dose, which involves multiple injections administered close together, followed by maintenance doses to sustain adequate B12 levels over time

Vitamin B12 injections are a popular addition to many aesthetics, wellness and healthcare businesses due to their broad appeal and demand from clients seeking wellness-focused treatments

How to Administer a B12 injection to Yourself There are two ways to self-inject vitamin B12: Subcutaneously, or just below the skin, and intramuscularly, which goes directly into the muscle, says Foxx

As you might have guessed, B12 is crucial for the Tryptophan production process, and so boosting your B12 levels with an injection or shot can help to ensure that you get a better night of restful sleep