Not sure either works because I just don't know anything about this treatment, but there are herbal formulas that might work. Most are based on gravel root. For example, Planetary Formulas makes one called Stone Free.
Thanks for the quick reply. Not passing any stones now. Just looking for a more palatable remedy then olive oil and lemon. Which works great if taken at the first signs. And I've had the "privlage" of passing about 4 more since my first stone.