Check out this link.

http://www.herbchina2000.com/Merchant2/merchant.mv?Screen=PROD&
Store_Code=HC2E&Product_Code=DD16

I called Nevada (state they are registered in) , They have a clean record in
the state no complaints.

I called China and spoke with them, they seem legitimate.

Finally I emailed them and this is what I got back:

Here is copy of an email they sent me: I am ready to order, Any Opinions?

Dear Mike Rodriquez,

Thank you for contacting us. In an observation based on 226 patients with
gallstone, it took 50 days in average to dissolve the stone with our product.
The biggest stone to be dissolve was 2.1 X 1.5 X 1.0 cm. You can get your
order in 2 – 3 weeks. It is purposed to be shipped from China by airmail.

Hope this will be of help.
With best regards,
James
Customer Care