what should b12 levels be after injection Vitamin Dosage for Adults: Guidelines Vitamin B12 | The BMJ
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Improved Mood and Mental Clarity: B12 helps regulate serotonin production, a neurotransmitter that influences mood, memory, and focus

Who is most likely to have Vitamin B12 deficiency

10.3390/ijms20040867 29 EsteghamatiA.Hafezi-NejadN.ZandiehA.SheikhbahaeiS.EbadiM.NakhjavaniM
Avoid mega-dosing without medical supervision, and remember that more is not necessarily betterthe body's absorption capacity is limited, and excess is simply excreted
