[Marshall] although I found a number of products that combine these two I
could not find any references that indicate that Omega 3s improve the
absorption of D3 ( or is it the other way around? ).  Does anyone have a
site that talks about this?

 

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Marshall,

Vitamin K helps Vitamin D absorption. Vitamins A and D are in symbiotic
relationship to each other-the more D you take, the more the body can
tolerate A. And I believe that iodine and calcium are also synergistic with
Vitamin D, though you'd have to do some research on this.

 

Nenah