I've heard lots about them, I was just wondering which people have tried and what works best for them? A friend of mine gave me one of them, I took some as we were preparing to pop out and it didnt seem to make any difference at all...buttt a couple of hours later when I went to bed I felt AWFUL and was really freaking out big time...I convinced myself it was due to this stuff but she reassured me otherwise. I'm willing to give it another shot as Ive heard so many good things about it, but would like to know more about the different kinds xxx