Drug-Supplement Interactions: An Overview

Date: 5/13/2019 - 5/13/2022

On-Line Registration

NPTA Elite: Included With Membership Register

NPTA CE+: Included With Membership Register

NPTA Insider: $12.50 Register

Contact Hours: 3.0

ACPE UAN: 0384-9999-19-107-H01-T



The National Pharmacy Technician Association (NPTA) is accredited by the Accreditation Council for
Pharmacy Education (ACPE) as a provider of continuing pharmacy education.

Target Audience: Certified Pharmacy Technicians

This CPE activity has been designated as a knowledge-based program.

Author: Phillip Gregory Pharm D

Faculty Disclosures/Conflicts of Interest: Author declared no conflict of interest and all information is provided fairly and without bias. Author received no commercial/financial support for this activity and do not approve or endorse any commercial products displayed.

Goals & Objectives:
At the completion of this activity, participants should be able to:

  • Define the term “dietary supplement.”
  • Describe the regulatory status of dietary supplement in the United States.
  • Describe the prevalence of dietary supplement use in the United States.
  • List determinants of dietary supplement use.
  • List risk factors for drug-supplement interactions.
  • List risk factors for major drug-supplement interactions.
  • Identify potential pharmacodynamic interactions between dietary supplements and drugs.
  • Identify potential pharmacokinetic interactions between dietary supplements and drug.
  • List dietary supplements that have the potential to interact with warfarin.
  • Describe the effect of St. John’s wort on drugs metabolized by cytochrome P450 3A4.
  • Describe steps that can be taken to reduce the risk of potential drug-supplement interactions.

Release Date: 05/13/2019

Expiration Date: 05/13/2022