I've taken IP6 on and off for the last couple of years. I did this for iron chelation. It's a pretty powerful regiment. After taking it for a week once, I started my period which I hadn't had for over 3 years. Scared me and I backed off.
Nature’s most effective iron-chelating molecule is inositol hexaphosphate (IP6), found naturally in seeds and bran. IP6 is a selective agent against cancer cells. Because cancer cells are high in iron content, IP6 directs most of its attention to abnormal cells. IP6 selectively removes iron from tumors cells, which deprives them of their primary growth factor. IP6 does not remove iron from red blood cells which are tightly bound to hemoglobin. Unlike cancer drugs, healthy cells are not affected with IP6, so IP6 has very low toxicity. [Deliliers GL, British J Haematology 117: 577–87, 2002]