Hi, Gabza. The recommended volume of apple juice to consume, preferably organic and unfiltered, is at least a quart a day for 3 to 5 1/2 days before the flush. I usually do 5 1/2 days before my flush and have been getting good results. The pectin and malic acid in the apple juice help soften and flatten the stones for smoother passage out of the gallbladder and liver. Some flush recipe recommends only 1 day of apple juice. It is really up to you. Hope this information helps. Kriek