The US government once dubbed psychologist Timothy Leary "the most dangerous man in America" for his advocacy for experimenting with LSD in the 1960s.

It is one of the strongest psychedelic drugs in the world, and its use has been spreading from South America to Europe. Many experts say ayahuasca is dangerous, and it is illegal in the UK ...

They remain a "hotspot" even of late, as investment in the psychedelic drug industry more broadly has been dipping. Mr Hardman estimates about a dozen or so companies have adopted it as a main or ...

Psychedelic cannabis refers to the use of cannabis as a psychedelic-assisted psychotherapy, which involves taking a psychedelic drug and then participating in a talk therapy session. According to ...