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However, when symptoms occur, often due to the underlying condition rather than the elevated B12 itself, they may include 12 : Acne Headaches Anxiety Irregular heartbeats Trouble falling or staying asleep Nausea Fatigue Dizziness The symptoms of high vitamin B 12 are vague

Vitamin B12, like any medication, can have potential risks and side effects, particularly if administered incorrectly or in excessive doses

Wholefoodbased supplements also tend to provide balanced amounts that complement dietary intake rather than megadosing in isolation

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