Yes I took them and they were awful. Most of them gave me a frantic energy, heart palpitations, couldn't sleep - I just could not live on them and would rather eat and be fat!

I guess I will put my experience. In 1999 I took advocare when it had ephedra in it. I lost 65 lbs in 3 months and I felt good and I was exercising and eating whatever I wanted, but I was only 22 and single. I got pregnant shortly after and gained all the weight back after I took the pills. Then I tried to use them again but it was after they took ephedra out of it and it didn't work like it used to.
I have pretty much tried every diet pill out there known to man and I think that is actually why I am 130 lbs heavier than I was when I started.

Yes, I took diet pills. They made me manic as hell. I could not sleep, constipation and gained the weight back after I got off of them.

I've tried lots of the different pills. The best I've found for me is phentermine from my Dr. I stay to the lower dose. It can make me a little jittery, especially the first few days, but it's like it makes me forget about eating. As long as I don't have a bowl of anything in "mindless eating" reach, I actually have to remind myself to eat something so I don't get hypoglycemic. I slowly lose the weight, but more importantly it's like it resets some of my bad habits after a few months.
Yes, going off of it, I have to just try to pretend I'm still on it and not think about eating.
That all being said, my weight continues to go up year after year. It may really be time for surgery.