From NPR.

The study enrolled just over 80 current smokers, who were randomly separated into two groups: one used a nicotine patch, the other ingested a relatively high dose of pure psilocybin just one time. At the 6-month mark, the psilocybin group had more than six times greater odds of being abstinent from cigarettes than their counterparts who had nicotine. Everyone in the trial also underwent 13 weeks of cognitive behavioral therapy.

Recent interest in psychedelics has mostly focused on depression and other mental health conditions. Psilocybin could be considered for drug approval in the next few years.