I have never used it. Just putting it out there.
I can't back up it's effects based on my own experience like everything else.
It is my beleif and experience that everything I recommend is enough on it's own given your own dedication and time.
You guys are on your own with this, but I just mentioned it because it may help....it may not. Only using it will determine this.
I'm going on record as saying it's not needed. Who knows though...it could be fantastic. You'll have to be your own guinea pig.