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How do I know how much vitamin D3 (cholecalciferol) should one take in supplement form?

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Dr. Frederick Singer
Internal Medicine - Endocrinology

In brief: 1-2000 units

If you have a normal blood level and are not overweight 1-2000 units should be sufficient to keep a normal level.

In brief: 1-2000 units

If you have a normal blood level and are not overweight 1-2000 units should be sufficient to keep a normal level.
Dr. Frederick Singer
Dr. Frederick Singer
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