I'd question how long the company has been in the market place and what the other ingredent are that are not listed. And of course the misuse of what an herb is. Lots of alternative's in the market place called herbs, which by the way are not herbal at all, but chemical made from other chemicals.
Just did a search of of the product and stuff like this:
(Still got half of bottle left and no growth at all...
don't be stupid and buy those products that gurantee growth. Simply you cannot grow from fake HGH lubrication, Sprays. I asked my doctor and he told me increaseheight.com can cause you cancer. )
It would be interesting to see what the FDA has to say about it.