I have used the Gold Coin Grass (GCG). Per the instructions on the site, you take this along with Coptis. I felt very good and slept very good while taking this. In fact (per my other append), I'm going to go back on this to help "crush" what I believe is a very large/stubborn stone.
> I just visited a site that is very helpful and explains more about it: www.sensiblehealth.com. I do not have any experience with it yet myself. -Celia