Chili, the mini-flush thing IS probably what brought about your problems, NO dialative when flushing is playing with fire, in my never so humble opinion!
There are many herbal stone busting herbs and which is best would be a matter of opinion and none of us have ever tried them ALL most probably. The hydrangea will probably work fine. I used my kidney cleanse formulat which has several different ones in it and 2 bottles of GCG from sensiblehealth.com.
btw ... anybody around here with good brains, listens to everything telman has to say ... the man has done his research!! and he's HONEST.