Malic Acid, Artichoke Tincture, Chinese Bitters, Gold Coin Grass and Chanca Piedra are great before fushing, but flushes work even without the apple juice procedure. I follow the apple juice fats a few times and that was fine as well, but lately I just go strainght for a flush and results are as good!
Artichoke and Chinese Bitters help the stagnant bile to move while the others help crunch and soften gallstones.