The oxalic acid diet has nothing to do with Casema. I simply stated that the ingredients in Casema are basically oxalic acid. Why spend money on a salve when you can eat regular food and accomplish the same thing? God has provided oxalic acid rich foods and beverages everywhere in the world. Please read the webpage and contact Colonel Joe. There is nothing to buy other than foods and herbs readily available at your nearest grocery store. Defeating any cancer is not difficult or expensive. You simply increase your consumption of rich oxalic acid foods and avoid the foods and environmental factors that conteract the acid's effectiveness.