what does a b12 injection do Vitamin Sites: All You Need to Know B12 Shots vs. IV Infusions:

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While most people get enough B12 from the food they eat, however, some people struggle to absorb enough B12 from their diet, leading to a deficiency

Medical evaluation required

Symptoms of vitamin B12 deficiency can vary widely and may include fatigue, weakness, pale skin, shortness of breath, neurological symptoms such as numbness or tingling in the hands and feet, difficulty walking, memory loss, and mood changes

Depressed levels of methylcobalamin, vitamin B12, and abnormal Schillings test have been reported in patients receiving octreotide

Intramuscular (IM) injections are typically administered into the arm's deltoid muscle, the vastus lateralis muscle of the thigh, or the ventrolateral muscle of the hip