I've never tried it myself. But I'm about 75% sure it's just another scam. Why? Because:
a)Most people who've tried it say it didn't work.
b)The amount of advertising and links going to his site is enormous.
c)Apparently it's pretty darn expensive
d)Have never seen it officially endorsed
I'm not saying you shouldn't give it a go if you want to - by all means try it, it may help a little for you - but don't expect it to be a "miracle cure".
That's just my advice though, I could be wrong.