
The Substance: Albert Hofmann's LSD
- Country: Germany, Switzerland
- Genres: Documentary, History, Biography
- Released: May 17, 2012
- Directors: Martin Witz
- Productions: Ventura Film, Teleclub AG, RSI-Radiotelevisione Svizzera
- Casts: Hanspeter Müller, Mario Scarabelli, Trevor J. Roling