I just read about the interaction of vitamin A(retinol) with vitamin D. I am taking 20,000 IU a day of vitamin A(retinol) to help fight candida, parasites, and other infections. I am going to change this to 10,000 IU a day of vitamin A, and try to get much more carotene in my diet. I might decrease the vitamin A some more later, but for the moment decreasing it to 10,000 IU a day seems prudent.

http://www.vitamindcouncil.org/newsletter/2008-december.shtml