Posted by iHerb Customer on Jul 21, 2010 | Verified Purchase
When first tested, my D level was at 19. My doc was not half as alarmed as I was. She said it was "just below the low end of normal." However, I know that the current range on lab tests is not reflective of recent discoveries, and 19 is actually very low. I want it to be in the optimal range of 50-80. If given expensive shots for D deficiency, they are often administered at 50,000 IU-- so to equal that I have been taking 10 of these softgels per week (one each day, and doubles on MWF.) When tested after about 4.5 months, my levels had doubled to 39. I don't get much sun, so I know it is the supplement working. That's enough proof for me to vouch for this product, and to continue using it.
Posted by iHerb Customer on Jul 14, 2008 | Verified Purchase
iHerb has one of the best prices online for this product. It is at a higher concentration than most, and thus more value. Thumbs up.
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