My experience is to take ENOUGH for long ENOUGH. I know that I have to kill them faster then they reproduce.
Yes Wormwood really is an incredible herb. I have certainly taken my share over the last 2 years. I also know that die-off can also produce a psychosis of sorts. I have experienced deep despair or anxiety while cleansing and not using Wormwood . This often lifted when a large worm would pass.
I know from my energy levels if the parasites are getting the upper hand again. This has happened to me twice in the last 2 years. I wasn't taking a large enough maintenance dose and hadn't done a sufficient colon cleanse.
Other herbs for worms are Black-Walnut tincture, olive leaf powder, elecampane, pau darco, cat's claw and raw garlic is great.