It would be good to use 20 drops of Chanca Piedra extract in a glass of water three times daily to break up any gallbladder stones into smaller bits. yes, there other useful herbs mentioned in the book. I have not had a person with a stint in the cystic duct do the liver flush, so I have to be honest with you. I canot give you an affirmative answer to your question. I also don't know how wide the stint is and how large the calcified stones are, that may be trying to go through the duct. I don't think any would be able to ensure you that a stone would not get stuck under these circumstances. The problem is that doctors don't know about alternative ways to clear gallstones, and through their treatments they may be preventing true healing.