Canna~Fangled Abstracts The phytocannabinoid, Δ(9) -tetrahydrocannabivarin, can act through 5-HT1 A receptors to produce antipsychotic effects. 2015 Mar;172(5):1305-18. doi: 10.1111/bph.13000. Cascio MG1, Zamberletti E, Marini P, Parolaro D, Pertwee RG. Author information Abstract BACKGROUND AND…Freedom WaresFebruary 23, 2015