Hiya! Interesting question. The Epsom Salts open up the ducts and allow the stones to pass thru more easily. You can also take things to dissolve the stones so the condition of the ducts is no longer such a concern. Malic acid, eating green apples and drinking organic apple juice, gold coin grass, phosfood, are all viable alternatives.
Also what you can do before the cleanse is every night take a tablespoon of the olive oil you plan to use - cold pressed, extra virgin organic is best. The olive oil will act as a lubricant, and will help the gb and ducts be more pliable. Avoid all other fats in your diet for this to work best.