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Diminished response of intestinal calcium absorption in response to increasing vitamin D supplementation
|
Daily vitamin D supplementation
|
Observed increase in calcium absorption
|
Estimated increase in calcium absorption per 1000 IU (25 μg)
|
|
| IU | μg | ||
| 800 | 20 | 3.90% | 4.88% |
| 2000 | 50 | 5.00% | 2.50% |
| 4000 | 100 | 6.70% | 1.68% |
