Definitely, the first flush yeilded a big stone load and I felt immediately better; that's why I've continued flushing. Into my 10th flush, I thought I was finished but around flush #13 big old ones came out so I have continued.. I think I'm probably needing another 10 or so to get emptied out of muck, and then go onto a maintenance program; p.s. i'm oldish so a lot of muck built up over the years, especially in the forties when the body slows down and is less efficient at detoxing and accumulates muck, stones etc x