I just did my 2nd flush yesterday/today. It was not difficult. I had a little heartburn and some soreness in my abdominan and lower back when I got up this morning. The heatburn and abdominan and lower back pain went away in few hours. I am now back to normal.
I think you should go to any drugstore to buy the Epsom Salt. Just follow the instructions. It is easy.
I got ~150 stones out. One of them size of almost a golf ball (1.5")!!! I can not believe I could have this in my liver!! A few of them the size of almond. About two dozens the the size of peanut. Rest of them are size of peas or smaller. There was no pain when passing the stones.