how to give yourself a b12 injection in the stomach Shot: Step-by-Step Guide for Self-Injection Giving yourself an injection |

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[6] [3] [10] A mild deficiency may not cause any discernible symptoms, but moderate deficiency can cause various symptoms, such as feeling tired, lightheadedness, headaches, cold intolerance, pale skin, sore tongue, upset stomach, loss of appetite, hair and skin color changes, numbness or tingling (pins and needles) of the fingers and toes, and tinnitus, and vision, cognitive or psychological problems

B12 keeps both body and brain sharp

These symptoms can take a toll on your productivity and overall well-being

Vitamin A