I haven't taken it, but I've heard many good things about it...
Of course, a number of those were at a short film shown to physicians and their families as something shown before the real movie (Drug companies will pay for various things in an effort to get doctors to prescribe the drug). The movie featured a computer animated guy named "Paxi" who saved various people from their illness. It was really strange, had strangely high production values, and was the most Joe Camel-esque advertisement I've ever seen, since, well, Joe Camel. I wish I could find the movie on Kazaa...
Good luck with the drug, and always listen to your doctor.