You can buy any 100% juice at your local grocery store and do this diet. Don't spend the 25 bucks when you can spend 3 to get the same thing. But you can only drink juice, nothing to eat. This is called a juice fast and should only be done a few days at a time. And yes, it is water weight, and will most likely to be gained back. Good luck if you decide to do it. And about the thyroid problem, I would ask your doctor if he thinks it is a good idea. My mom takes an ephedra supplement, and she has a thyroid disorder, but this is strongly discouraged. I don't think a juice diet would hurt, but I am not a doctor. So, I would ask before starting any diet.
[This message has been edited by ANP (edited 07-19-2001).]