Oh hey! Sorry, I haven't been on here too much lately... at least not on this forum. I was interested in buying Brava a week or so ago, and was preoccupied with the Brava forum than this main one.
Anyway, to answer your question, the Chinese herb I used was called FO-TI (or HE SHOU WU in Chinese). It's pretty much one of those "super herbs" that can help with just about any part of your body (kinda like Ginseng).
I'm not sure about where to buy it in Europe. I live in the U.S. and I can buy it at Organic food stores like Henry's or Wild Oats, as well as Vitamin stores like Vitamin World. I would say look at those kinds of places for Fo-Ti. If all else fails, look online! I don't know if they ship internationally, but iHerbs.com, SwansonVitamins.com, and VitaminShoppe.com are all good places to stock up on herbs and should have it. The brand I use is Nature's Way, if that helps any. You can go to NaturesWay.com to see if you can find a store near you that sells this brand. Don't know if it only works in the U.S. or not, though.