 The Zendo Project conducted by the Multidisciplinary Association for Psychedelic Studies uses principles from psychedelic therapy to provide safe places and emotional support for people having difficult experiences on psychedelic drugs at select festivals such as Burning Man, Boom Festival, and Lightning in a Bottle without medical or law enforcement intervention.Drugs such as MDMA (commonly sold by the slang names "ecstasy" and "molly") are often adulterated.One harm reduction approach is drug checking, where people intending to use drugs can have their substances tested for content and purity so that they can then make more informed decisions about safer consumption.