Thujone, which is the psychoactive from the wormword is not supposedly not existent in the quantities that got it banned oh-so-long ago.
I have a buddy who is really into it, and I don't think you can get your hands on anything that will make you hallucinate anymore. The stuff he usually gets has one of the higher amounts of thujone in it, and I don't think it's even enough. Better off just trying to get ahold of the wormwood if you're than bent on hallucinating from it.
If you don't like chicken fried steak, then I don't like you.