Did you also use a zapper? Dr. Clark tells you that both herbals and a zapper are needed.
I managed to eliminate my problems, including my Tapeworm using the zapper and an Epsom Salt flush. Perhaps I was just lucky or perhaps I was more consistent with my effort.
I did use a multi-frequency zapper to find success however. A single frequency or even dual frequency just does not provide enough range to be close to complete.
One thing that I will say about herbals, is that they are not always consistent. Not all Wormwood is the same and not all tinctures of Black-Walnut hull are the same.