how lont for b12 injection to work Quickly Does Shot Work? Duration of Benefits How Quickly Do B12 Shots
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Patients may experience: Persistent fatigue and weakness Breathlessness on exertion Pallor or a slightly yellowish tinge to the skin Heart palpitations Neurological symptoms are of particular clinical concern, as nerve damage caused by prolonged B12 deficiency can be irreversible if not treated promptly

Dizziness and lightheadedness: Vitamin B12 deficiency can cause a drop in blood pressure, leading to dizziness or lightheadedness

Mem Inst Oswaldo Cruz 101: 341344

Your body uses what it needs, and much of the excess is filtered out by the kidneys and passed in urine
