I highly recommend the Budwig Diet, though I would add that in today's world of mineral depleted soils, nutrient depleted foods and all the chemicals in our food, air and water I think a person who is actively fighting cancer would be well advised to not rely solely on the Budwig Diet.
A number of people in the Oleandersoup Yahoo health group I host have used Budwig and still needed some extra cancer fighters. I would surely incorporate the diet if it were me, and it has saved the lives of a very great many people.
The product I like is Cell Forte (especially the Cell Forte Max3), which contains both inositol and IP6 (a form of inositol). I am not sure exactly how it is made, but the product is highly regarded and is free of sugar, salt, yeast, wheat, gluten, corn, soy, dairy products, or preservatives. All colors used are from natural sources too.
You might try Jarrow Formulas IP6 for a rice bran product. You can find it by Google, or I found it here at this link: