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A couple of days later I had extreme fatigue, and for the last few days I have had tiredness like nothing I have ever experienced before, its extreme like Im on the verge of falling asleep almost

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Vitamin D Shot Vitamin D is essential for bone health, calcium absorption, immune function, and mood regulation

Because vitamin B12 helps the body produce brain chemicals that can affect mood and cognitive functions, a deficiency may lead to anxiety or depression

B12 is involved in producing red blood cells, maintaining a healthy nervous system, and converting food to energy