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Overdosing on certain vitamins can lead to serious complications and, in rare circumstances, even death
Why Vials, Sprays, and Dosage Calculators Can Mislead A vial label, such as a total milligram amount, does not define a dose by itself
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Vitamin B12 Deficiency Low B12 levels cause a range of health problems
Without enough B12, red blood cells can become large and irregular (megaloblastic anemia), which reduces their ability to carry oxygen efficiently
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