I suppose this is an old thread, but one of my biggest pet peeves is when someone claims something is safe simply because it is "all natural." Poisonous mushrooms found in the forest are all natural, it doesn't mean they're safe.
It's unforutnate, but many of these ads pray on people's desperation. I'm sure a lot of intelligent people (Myself included) have wasted money on supplements with the hope that it will be the one thing that gets them over their personal hurdles.
Nope. Nada. No way.