Pharmacologic Action Terms

Every drug and chemical MeSH heading has been assigned one or more headings that describe known pharmacological actions (PA).

• Since 1996, NLM indexers add the appropriate pharmacological action MeSH heading as well as the specific chemical MeSH heading to a citation when the action of the chemical is discussed in the article.

Example:

The pharmacological actions established for the MeSH Heading, Aspirin:

A citation to an article that discusses aspirin used as an anti-inflammatory agent will be assigned:

Aspirin
Anti-Inflammatory Agents, Non-Steroidal

A citation to an article that discusses aspirin used to inhibit blood clotting will be assigned:

Aspirin
Platelet Aggregation Inhibitors

In a later section of this tutorial, you will learn how to use PubMed's MeSH Database to find MeSH terms for searching.

For more information about MeSH, see the Basics of MeSH web site.

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