The tox report reveals that the "potion" Tiara drunk, was a mixture of hallucinogens, tranqs, date rape drugs, and human blood.
the ICD-10 code for mental and behavioural disorders due to use of hallucinogens
Their shows were extravagant and anarchistic, some of the musicians lived together in a commune in German Odenwald region, experimented with hallucinogens (one of their songs is titled The LSD March/German: Der LSD-Marsch).