@AnswerMan - My wife went to the health food store after her last kidney stone attack and bought one of those kidney stone flush kits. She said it wasn't the best tasting stuff she'd ever had, but she did feel like it was doing something positive internally. She didn't feel those little twinges of pain she used to experience before an impending attack.
I say as long as the ingredients don't trigger allergies or cause more problems than they solve, going with a homeopathic cleanse makes sense to me. Thankfully, I've never had to go through the pain of a kidney stone attack myself, but my wife tells me it can be really intense.