DutchArie, I hope you have found somthing by now. I just read you text and if you have not, read on. I have had very bad kidey stones in the past and would highly recomend the tea in Hulda Clark s " A cure for all dieases". this book is complete and free on the web. Just google " Hulda Clark kidney clease". it has several herb you make into a tea and drink a small amount every morning. then you make parsley tea and also drink a small amount every morning. the instructions are in the book. good luck. I feel for anyone with kidney stones. This has worked two times for me. The stones were gone and never strained any out. good luck.