Vit D: Vitamin D comes in 1000 iu caps, 2000 iu caps, and in special stores and online, in 4000 iu and 5000 iu caps. Shop around. 5000 iu is a high dose. 2000 iu to 4000 iu is very effective. Too much vit D can result in elevated serum calcium levels and potential kidney injury or stones.
Answered 8/26/2014
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One of 5000 u: vitamin D comes in various sizes. It comes in 5000 u tablets, in which case, that is one pill per day
Answered 9/3/2014
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