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This guide will help
A lack of B12 can lead to anemia (not having enough red blood cells), which causes you to feel tired and weak
Most people feel a lift after a B12 shot, but a minority feel briefly worse
B12 injections bypass the gastrointestinal tract and are 100% bioavailable, making them ideal for patients with pernicious anemia, GI disorders, or severe deficiency
Its sterile water that contains 0.9% benzyl alcohol, which acts as a preservative
US$ 20.84
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