I do know that I had a procedure to break up a large stone that I had and my urologist instructed me to drink lemonade. He told me that it would keep the stone fragments from bonding to each other and forming into another stone or reattaching to anything left of the original stone. I would guess that it would have some effect and certainly couldn't hurt. Hope this helps.
My husband drinks water with lemon juice in it on a daily basis. He says it cleanses the pipes so to say and stops kidney stone formation.
It just don't work for me :(