Research and Pilot Programs

CASPR's mission is to bring better addiction medicines to market: high-impact treatments that can reduce the rates of addiction at a population scale.

GLP-1RAs have shown immense promise for reducing opioid overdoses, alcohol use disorders, and several other substance use disorders (SUD). CASPR funds research centers for trials and programs focused on GLP-1RAs and addiction, as well as its downstream impacts, including recidivism and employment.

Current Trials and Programs

Allegheny County GLP-1 Trial

In partnership with the Allegheny County Department of Human Services, this study will measure the impact of GLP-1s on alcohol and opioid use, as well as economic and social outcomes including recidivism and employment.

PARTNERS Read more

Phase 3 Semaglutide for AUD Trial

CASPR initiated the development of CRAVE, the VA’s Phase 3 trial of semaglutide for AUD, convening our scientific advisory board, and co-developing the initial protocol with the VA team. The trial plans to enroll 622 veterans and is led by Dr. Dave Oslin at the Corporal Michael J. Crescenz VA Medical Center in Philadelphia. Dr. Oslin is also a coauthor of our EHR-based OUD study in veterans. CRAVE began recruiting on July 28, 2026, and is expected to be completed in May 2029.

PARTNERS View the trial

Caron Treatment Centers Pilot

An entire cohort leaving Caron's 28-day treatment program reported zero cravings. Patients with stimulant use disorder, which has no FDA-approved medication, have also reported positive experiences.

PARTNERS Read more

OpenDoors RI Pilot

Provides semaglutide to women and men with addiction history living in transitional housing after incarceration, and observes impacts on their recovery and success.

PARTNERS Read more

GLP-1RAs and Overdose Risk in Veterans with OUD

PARTNERS

Among Veterans with type 2 diabetes and opioid use disorder, starting semaglutide or tirzepatide was associated with a 68% lower 12-month overdose risk than insulin and 75% lower than SGLT2 inhibitors. Results were not statistically significant versus metformin, sulfonylureas, or DPP-4 inhibitors; randomized trials are still needed.

Read the paper

Participant Stories

Jessica Massarone, a participant in CASPR's OpenDoors pilot program
Jessica Massarone, a participant in CASPR's OpenDoors pilot program. Photo by Hannah Altman for The New York Times.
From Homeless in Woonsocket to Recovery: GLP-1 treatment changes everything for one woman.

Evidence and Updates

Evidence for GLP-1s and SUD

There is a significant body of evidence for GLP-1s reducing craving and consumption of substances including alcohol, opioids, tobacco and cannabis.

Read the review

Follow our research

CASPR publishes ongoing research updates on our Substack, Recursive Adaptation.

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