Oh, I found this on a vitamin site that I order my vitamins from. I typed in circulation and the below link shows what came up:

http://www.puritan.com/cardiovascula...=1&sortOrder=2

They are a good vitamin company and have great deals. You buy 2 bottles and get 3 free. Shipping is $4.95.

You could have low circulation that is another reason for cold hands and feet. Worth looking into I guess. Hope some of this helps