The last 2 companies to sell a Dr.Christopher product are using a TradeMark name "Dr. Christopher Original" The name has nothing to do with the product. David Christopher left the company 20 years ago!!!!!!!!!!!!!! His sister sold out several years ago. The FDA stopped them from using many of their herbs not because the herbs were bad, but because they claimed the herbs would heal. This is the way it is in the land of the free.
If you want to know formulas you have to have the formula book which is the School of Natural Healing. It gives you parts of each herb for many of the formulas.