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How To Find Information About Complementary and Integrative Health Practices on PubMed®

Want to know what the science says about a complementary and integrative health topic?

Try looking it up in PubMed®, a U.S. Government database that includes citations for more than 32 million scientific papers.

A new, updated version of PubMed went online in 2020, so you can use it on a computer, tablet, or phone.

This guide shows you several common types of searches you might want to try. Follow along with us as we search for publications on:

  • A complementary health approach (the herb echinacea)
  • Complementary health approaches for a condition (depression)
  • Studies funded by the National Center for Complementary and Integrative Health (NCCIH) on a specific topic (tai chi)

We’ll also show you how to:

  • Get the full text of an article if it’s available
  • Have your search results sent to you
  • Narrow your search
  • Find out about advanced search features

If you need more detailed information, go to the PubMed User Guide.

Searching for Publications About a Complementary Health Approach

Let’s search for publications about the herb echinacea.

1. Go to PubMed at A search box will appear.

2. Type echinacea into the search box.

PubMed search box showing "echinacea" as a search term

3. Hit the “Search” button. You’ll get a list of results like these:

Results of a PubMed search for "echinacea"

You can now go through the list of citations to find the ones that interest you.

To read the abstract of a paper listed on your search results page, click on its title. Here’s what the beginning of an abstract in PubMed looks like.

PubMed abstract of a study on echinacea

Searching for Publications on Complementary Approaches for a Health Condition

Perhaps you’re interested in finding out what complementary approaches are used for a specific health condition—let’s use depression as an example. A good term to use for this type of search is “complementary therapies.”

1. Go to PubMed at

2. Type complementary therapies and depression into the search box.

PubMed search for Complementary Therapies and Depression

3. Hit the “Search” button.

You’ll get results like these.

Results of a PubMed search for "complementary therapies depression"

Searching for NCCIH-Funded Studies

Perhaps you’re interested in seeing what research NCCIH has funded on a specific topic—let’s use tai chi as an example. There’s a special way to do this that takes advantage of one of PubMed’s Advanced Search features.

1. Go to PubMed at

2. Type NCCIH [gr] into the search box, followed by tai chi. The “[gr]” is a search field tag that searches specifically for a grant number.

PubMed search box showing search for "NCCIH [gr] tai chi"

3. Hit the “Search” button.

Here are the results:

Results of a PubMed search for "NCCIH [gr] tai chi"

Getting Full-Text Articles

The full text of some papers listed in PubMed is available for free from PubMed Central® (PMC).

If full text is available through PMC, you’ll see this icon on the right-hand side of the abstract page, next to the paper’s title.

PMC logo

Just click on the icon and you can read the full paper. In most instances, you can also download it as a PDF file or in other formats.

How To Have Your Search Results Sent to You

You may want to have the results of a PubMed search sent to you so you can review them later.

1. After you’ve completed your search, click on “Email” below the search box.

Circled box showing how to email a PubMed search

2. You’ll see this popup. You can use it to have the search results sent to you by email.

Popup from PubMed for emailing citations

Adding More Search Terms

If you narrow your topic, you can focus your search to get more useful results.


For example, our search for “echinacea” produced 1,325 results. But perhaps you’re only interested in echinacea as a treatment for colds. If you add “colds” as a second search term, you’ll get a more manageable 175 results.


Image of PubMed search with echinacea cold in the search bar

Changing the Display Options

Sometimes when you search PubMed, you want to see the most recent research on a topic. PubMed can arrange your search results in this way.


Find the “Display options” box in the top right-hand corner of the page. You’ll see that the display options are automatically set to “Best match.”


image of PubMed search with echinacea in the search bar and the words 175 results circled


To see the most recent papers instead, click on “Display options.” A drop-down menu will appear. Click on the menu for “Sort by” and choose “Publication date.”


Image of PubMed search with echinacea in the search bar. The words Sorted by: Best Match Display Options are circled.


Your citations will now appear with the most recently published papers at the top of the list.


PubMed search with echinacea in the search bar and the words Sorted by publication date display options are circled.

Using Filters

To the left of your list of search results, you’ll see a group of options called “Filters.” You can use filters to limit the results of your search.


For example, you could limit your results to papers published in the past 5 years, those that have free full text available, or those that report on randomized controlled trials. You can also use more than one filter at the same time.


Filter in PubMed search showing free full text, randomized controlled trials, and 5 years circled

Advanced Search on the PubMed User Guide page

Need More Help?

This guide has only scratched the surface of what you can do with PubMed. For information on other topics, such as searching by author or journal, expanding a search, or finding a specific citation, go to the PubMed User Guide.

You can also call or email the NCCIH Clearinghouse to help you find information in PubMed on the specific complementary health topic you’re researching.

NCCIH Clearinghouse

The NCCIH Clearinghouse provides information on NCCIH and complementary and integrative health approaches, including publications and searches of Federal databases of scientific and medical literature. The Clearinghouse does not provide medical advice, treatment recommendations, or referrals to practitioners.

Toll-free in the U.S.: 1-888-644-6226

Telecommunications relay service (TRS): 7-1-1


Email: (link sends email)

This publication is not copyrighted and is in the public domain. Duplication is encouraged.

NCCIH has provided this material for your information. It is not intended to substitute for the medical expertise and advice of your health care provider(s). We encourage you to discuss any decisions about treatment or care with your health care provider. The mention of any product, service, or therapy is not an endorsement by NCCIH.

Last Updated: August 2021