When looking for a good vitamin D, look for D3 because it is the most easily absorbed by the body. It's also best to take it combined with vitamin K2. These two work synergistically and are co-enzymes. One of their big roles is getting calcium to the bones rather than having it going into tissue and creating plaque buildup.
My holistic doctor has always checked our vitamin D levels and stressed the importance of keeping levels up, especially in the winter when it's so hard to get sunshine. We take this regularly and I can't tell you how much it helps our immune systems. Be sure to be taking magnesium when taking vitamin D because it is essential to convert vitamin D into its active form in the liver and kidneys.
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