A randomized, double-blind, placebo-controlled trial of vitamin D supplementation with or without calcium in community-dwelling vitamin D deficient subjects.

Although 25(OH)D levels marginally increased in the two groups received vitamin D3 supplement compared to the decline seen in the calcium supplement alone and the placebo group, these changes between groups albeit more pronounced in subjects who took 50% or more of prescribed supplements tables, did not reach statistical significance.

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