I'm doing Andreas Mortiz liver flush. It calls of drinking 1 litre of apple juice during the prep days:
"Drink either of these juices slowly and in small portions spread throughout the day, between meals. You want to make sure there is a continuous supply of malic acid almost throughout the day, which is required to help soften the stones. Avoid drinking the juice during, just before, and in the first 1-2 hours after meals, and in the evening past 6 p.m. This is in addition to your normal daily water intake of 6 to 8 glasses."
So if you can't drink it before meals and until 2 hours after, it reduces the window in which you can drink it. And it has to be drunk slowly? Also, how do you fit in drinking 2 litres of water around it as well? I assume you can't drink water at the same time as the apple juice as it will dilute it.