Both products are good sources of IP6. The Enzymatic Therapy Cell Forte w/IP-6 & Inositol has some added minerals which are a nice addition, as they are exactly the minerals thals should be taking. If the cost isn't a problem, I would say that Enzymatic Therapy Cell Forte w/IP-6 & Inositol offers more. The Puritan's Pride IP6 is much cheaper, so if the cost is a factor, this would also be a good choice.