Where can you purchase Tripterygium wilfordii seeds from?

No place to purchase Tripterygium wilfordii, also called Lei gong tengs or Thunder God vine, seeds could be found online. They did not even come up on a serch on eBay or Amazon, and no place to purchse it in supplement form was found. That does not mean that it is not available, it just means that it is very hard to find. It might be possible to locate seeds or a supplement by asking on forums or calling seed suppliers.