Would you recommend diet and Gold Coin Grass before first liver flush?

I just had my first gallstone attack. Before I do a liver flush, it appears I should first do a diet and take herbs.

What diet would you recommend and for how long?

One website recommends gold coin grass (or herba lysimachinae) in tincture form. Has anyone had experience with that? My local health food store can't find any mention of it in their herbal database. Would you recommend any other herbs?

Thanks.