Have you tried sun exposure? It is still recommend that you get your vitamin d through sun exposure. I think it is the most natural way to get it. Here's a great article about vitamin d deficiency (http://articles.mercola.com/sites/articles/archive/2008/12/16/my-one-hour-vitamin-d-lecture-to-clear-up-all-your-confusion-on-this-vital-nutrient.aspx) and how to get it naturally.