The herbal supplement I am taking is called rehmannia six formula and its a chinese herbal supplement. I am taking 4-5 capsules 3x per day between meals. I am unsure if you can get it online; the brand is sun ten.
Check out these two posts as well:
I take juniper homeopathic to protect my liver and kidneys. I have a feeling the extract works pretty well also.
I am also taking milk thistle for the liver, some homeopathics, and black walnut extract (antifungal) which releases toxins from the liver as well.