In Berlin, a unique medical clinic has been quietly addressing the needs of a growing, underserved patient population: individuals experiencing lingering and disruptive effects from psychedelic substances. Known as the Ambulanz Psychedelische Substanzen (Outpatient Clinic for Psychedelic Substances) and based at Charité, one of Germany’s most prestigious university hospitals, the clinic was founded by psychiatrist Dr. Tomislav Majić in 2018. As The Guardian reported, since its inception, the clinic has become a rare haven for people suffering from conditions like hallucinogen persisting percep…