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Practical Information on the Medical Applications of Cannabis

A dearth of guidelines and education on the topic of medicinal cannabis exists despite ever expanding state laws legalizing both recreational and medical use of cannabis. Pharmacist must be aware of adverse reactions, drug interactions and specific monitoring parameters related to cannabis use in their patient populations and be prepared to answer questions surrounding these topics. Content for this module will cover basic information needed to make educated clinical decisions regarding cannabis use, both medicinal and recreational..

Learning Objectives

Upon completion of this activity, the participant will be able to:

  • Identify and describe the general pharmacology of cannabis, cannabinoids (THC and CBD) and the endocannabinoid system.
  • Restate key laws protecting both medical professionals and patients/users of medical cannabis.
  • Recognize potential drug-drug interactions and adverse events related to the use of cannabis.
  • Translate data provided into practical information applicable in clinical decision making for patients using cannabis.


Evan Horton, PharmD, BCPPS, RPh has held academic appointments at MCPHS University, Worcester Campus since 2006 and is currently an Associate Professor of Pharmacy Practice, and serves as clinical preceptor. His clinical practice site is Baystate Children's Hospital in Springfield, MA. Evan received his Doctor of Pharmacy from Bernard J. Dunn School of Pharmacy at Shenandoah University in Winchester, VA in 2005, and completed residency at the University of New Mexico Hospital in Albuquerque. In 2017 he became board certified in pediatric pharmacotherapy (BCPPS). Dr. Horton holds membership with American Associations of Colleges of Pharmacy, Pediatric Pharmacy Advocacy Group and the America Society of Health Systems Pharmacists. In addition to teaching at MCPHS University in the areas of pediatric pharmacy, pain management, substance use disorders, and the clinical application of medical cannabis, he has also presented on these topics to professional healthcare audiences.

Matthew D. Metcalf, PharmD, PhD has held the role of Assistant Professor of Medicinal Chemistry at MCPHS University, Worcester Campus, since 2013. Prior to this he held academic and research appointments at University of Maryland School of Pharmacy and University of Minnesota College of Pharmacy. Matthew received his Doctor of Pharmacy in 2002 and a PhD in 2007, both from the University of Maryland School of Pharmacy, Baltimore. Dr. Metcalf holds membership with the International Narcotics Research Conference, the College on Problems of Drug Dependence, the International Cannabinoid Research Society and the American Association of Colleges of Pharmacy.

Free for MCPHS alumni, faculty and staff. For all others the fee is $12.00.


ACPE logo

Release Date: 3/24/21
Expiration Date: 3/24/22
Contact Hours: 1.5
Universal Activity Number: 0026-0000-21-123-H04-P
Topic Designator: General Pharmacy


MCPHS University is accredited by the Accreditation Council for Pharmacy Education as a provider of continuing pharmacy education. MCPHS designates this educational activity for a total of 1.5 contact hours (.15 CEUs).

Requirements for Credit

In order to receive credit, the participant must review the entire presentation and complete the post-test and evaluation form. Upon completion participant credit will be reported to CPE Monitor. Transcripts may be printed from CPE Monitor.

Statement of Disclosure

MCPHS University adheres to the ACPE Standards regarding commercial support of continuing pharmacy education. It is the policy of MCPHS University that the speakers and planning committee disclose real or apparent conflicts of interest relating to the topics of the educational activity, that relevant conflicts of interest are resolved, and also that speakers will disclose any unlabeled/unapproved use of drugs or devices during their presentation.

No funding from industry provided for this event. No exhibitors will be present.
Evan Horton, PharmD, BCPPS, RPh and Matthew D. Metcalf, PharmD, PhD, have no relevant financial relationships to disclose.
All CE staff members have no relevant financial relationships to disclose.