Skip to main contentLink to External Link Policy

Because of a lapse in Government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding Government operating status and resumption of normal operations can be found at OPM.gov.

NCCIH Research Blog

Blog Posts Category: Safety

Finding Answers to Questions About Drug-Herb Interactions

September 2, 2021

NCCIH supports research to provide rigorous data to help consumers and health care providers make informed decisions about using drugs and herbs together. Learn more in this blog post.

Read More


Approach Dietary Supplements with Caution

October 16, 2015

John S. Williamson, Ph.D.

A recent NEJM study points to safety issues with dietary supplements.

Read More