5000 iu D3 &...: Most adults need about 5000 iu of d3/day in fall & winter to get good levels. Take year-round if you use sunscreen or avoid mid-day sun in spring/summer. It's best to take d with about 1 mg of k & 5000 iu vit a. Calcium depends on your diet- best sources are leafy greens & dairy. If not a lot of those take 5-600 mg of a well-absorbed form like calcium citrate, with a similar amount of magnesium.
Answered 5/6/2013
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