Thomas wrote: I am having Garden of Life Olde World Icelandic Cod Liver Oil.
Is that a good one?
The published RDA for vitamins A & D are 5000 IU for vitamin A, and the 2010 newly revised RDA for D is 600 IU. However, we all need more vitamin D than this, especially if you’re not spending time in the sun everyday and especially vitamin D3 because as you’ve probably seen, few if any supplements contain D3. A decent amount is the 5000 IU for A (combined with D in a capsule is fine), and an additional 4000 to 5000 IU of vitamin D3.
The video linked below is an interview with Dr. Cannell, head of the U.S.A. Vitamin D Council.
Vitamin D deficiency: http://www.youtube.com/watch?v=nkjr0CWvdsI&feature=related
NOTE: The above video recommends tanning beds while researches report that tanning beds are not safe as they have been known to produce skin cancer.
Thomas, if the amount shown on your supplement is truly what the cod liver oil contains, then all you need to do is add additional D (preferably D3) to your regimen.
For anyone who is able to obtain plenty of sunlight, the amounts shown may not apply to you.