It is my understanding that beet juice is a a very good liver cleanser and I personally use it in my daily juice to the tune of half a medium sized beet per day. I can't speak of it in term of actual theraputic doses for liver ailments but all the literature I've read always mentions it's favorable effects on the liver. The other thing that I have always read that it is pretty strong and to be judicious and not ingest large quantities at once. The one thing I'll tell you for sure is it will certainly color your poop red!. You should be able to find some sugestions on theraputic doses of beet juice with a little research on the internet.
Maybe Monsieur le Docteur Benghauser will come down to earth in a good doobie mode and help you out and recomend some herbal remedies and leave out all the naysaying and negative crap and not beat us over the head with his title. ;+D