are vitamin b12 injections given im or sq How to Give a B12 Injection: Step-By Best Vitamin B12 Injection Sites
Description
Helping your cells produce new DNA, which is necessary for cell division, tissue growth, and repair

In a study (3) of people with normal levels of the vitamin, a B12 supplement didnt have an effect on depression

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This means that you will feel tired when it is time for bed, and get better sleep