Someone came on here once recommending it, but I haven't heard from that person since, as far as I am aware.
Gall stones, if you are prone to form them, are constantly reforming. In short, you will always have gall stones--for the rest of your life.
<<how bad was it i hear you have to be up all night and walk around>>
That sounds like a gall bladder attack to me. God knows why anyone would want to bring one of those on purpose. I always tried to avoid them! Like I said, you will reform your stones (if this even gets rid of any or all of them), so you will get to lather, rinse and repeat that process!
The other thing to worry about is that some stones are larger than your bile duct--in fact, that's where the pain of attacks comes from in people with gall stones--from them getting stuck, like a kidney stone. The stones don't really damage your gall bladder (as far as I've read), but they hurt when they get flushed out if they're big, they can get so clogged up in there that they cause your gall bladder not to function fully, and even the little ones that dribble out without causing you pain can interfere with the function in your intestines.
If you have big stone, and you try to flush it out, it will become lodged in your bile duct. I have heard that's even worse than your standard gall bladder pain. A curl-up-in-a-fetal-position-and-can't-get-up sort of pain. You will have to be rushed to the emergency room and they will give you an emergency gall bladder removal. If you try and bear the pain, hoping the stone will pass on its own anyways, and it doesn't, it can quickly cause an infection and then you will have to stay in the hospital a few days on IV antibiotics before they do emergency surgery to take it out. A lot of people have that happen to them all of a sudden because they never even knew they had stones; they sneak up on a lot of people.
In short, I would never touch a product like that. While some people have mild gall bladder attacks, and it's worth their while to occasionally endure them, I had fairly frequent attacks and even more frequent associated symptoms for five years. And I can tell you that my life is better now that it is gone! Yes, I still have some bowel problems, but they're not as bad as before and I don't have pain from attacks. I've never regretted getting mine out. But when most people ask if they should have it taken out or not, I usually tell them "If you have to ask, it's not bad enough yet. Just wait and it'll get there eventually!"