He had a really bad trip on mushrooms around 1988 and then took it easy with psychedelics in the following years. He would dose but i hear it was always low and infrequently, apart from some daily low-level lsd at times (and copious amounts of cannabis everyday, of course)
In the book the brotherhood of the screaming abyss dennis talks about how after finding the tumor in his brain they did take psilocybin together, but it was only a lower end dose then as well.
<Ringworm>hehehe, it's all fun and games till someone loses an "I"