What are psychedelics?

Psychedelics are substances that affect the mind by altering perception and mood and bringing about non-ordinary states of consciousness. In some cases, psychedelics can also induce hallucinations. Psychedelic plants and fungi have been used by indigenous communities for medicinal and ceremonial purposes for thousands of years.¹ Today, psychedelics are the subject of numerous studies and over 90 clinical trials that are exploring their efficacy in treating mental health conditions such as depression, post-traumatic stress disorder (PTSD), substance dependence and abuse, anxiety, traumatic brain injury, and more.