Integration of a clinical pharmacy specialist into a substance use disorder intensive outpatient treatment program to improve prescribing rates of alcohol use disorder pharmacotherapy

ABSTRACT

Background: Research has demonstrated that the combination of pharmacotherapy and psychological interventions in alcohol use disorder (AUD) treatment is superior to either alone. Despite this, medications remain highly underutilized in many outpatient treatment facilities. Pharmacists can serve as an excellent resource to aid in improving access to medications. Methods: This study was a prospective, longitudinal evaluation of a pharmacist's role in a substance use disorder (SUD) clinic, specifically an intensive outpatient program (IOP). The primary objective was to determine if the addition of a clinical pharmacy specialist (CPS) as a bridge until next available provider appointment would improve access to AUD pharmacotherapy for patients in the IOP. Results: A total of 43 patients were enrolled in the IOP during the study. Of these, 27 patients presented with a primary diagnosis of AUD, and only eight were receiving AUD pharmacotherapy at the start of the program. During this intervention, 11 patients expressed interest in initiating a medication for AUD while in the IOP. The average wait time for a medication evaluation appointment with the CPS was 1.4 days. By comparison, the average wait time for an addiction psychiatrist was approximately 44 days. Each patient was seen for an average of two 30-minute visits, including an initial medication evaluation and one follow-up. Upon completion of CPS services, patients were referred almost equally to an established non-addiction recovery services (ARS) mental health provider (36%), an ARS psychiatrist (36%), or a primary care provider (28%). Conclusion: Our study highlights the role that pharmacists can play in improving access to evidence-based AUD pharmacotherapy, as well as in providing medication education to patients and providers. Long-term prospective research and pharmacoeconomic analysis are needed to determine the sustainability of this service, both at our facility and in other similar practice settings.

Keywords:

• alcohol use disorder
• intensive outpatient program
• pharmacist

Author Contributions

All authors were involved in research conception and design, implementation of service, data collection, and interpretation of results. The manuscript was written by Erica Dimitropoulos and revised by the co-authors.