Crimes: controlled substances; creating, manufacturing, possessing, or using psilocybin or psilocin; allow under certain circumstances. Amends 1978 PA 368 (MCL 333.1101 - 333.25211) by adding sec. 7404a.

HB 4686 would allow adults with a diagnosed PTSD to legally create, possess, or use psilocybin or psilocin under strict conditions. It directly affects individuals aged 18+ who have a medical record confirming a PTSD diagnosis. The bill permits possession of up to 2 ounces for personal use only, exempting these activities from existing prohibitions under Michigan’s Public Health Code (sections 7401, 7403, and 7404). This is limited to medical use for PTSD and does not permit commercial activity or broader access.