Suzanne Sue Sisley

Scottsdale Research Institute (SRI) is a clinical research organization founded and led by Dr. Suzanne Sisley. The institute specializes in conducting FDA-approved clinical trials to evaluate the therapeutic potential of botanical cannabis and other controlled substances. SRI gained national prominence for its landmark study on the use of whole-plant cannabis to treat Post-Traumatic Stress Disorder (PTSD) in military veterans. Beyond clinical research, the organization is actively involved in legal and policy advocacy to expand access to high-quality, federally legal research-grade cannabis for scientists. The institute operates with a focus on rigorous scientific methodology to provide evidence-based data on cannabinoid safety and efficacy. SRI is one of the few private entities in the United States to hold a DEA license for the bulk manufacture of cannabis for clinical research.