A new study that was published in JAMA Psychiatry found that psilocybin was effective in reducing heavy drinking by a whopping 83%. For the study, 93 alcohol-dependent patients were tasked to participate in 2 sessions that were four weeks apart. They were given either a placebo or psilocybin, but they didn’t know which ones they were given. Each session involved them laying on a couch with headphones and sunglasses, listening to music. They were also asked to undergo 12 psychotherapy talk sessions before they were given medications.