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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.


The pharmacological actions established for the MeSH Heading, Aspirin:

Pharmacologic Action:

  • Anti-Inflammatory Agents, Non-Steroidal
  • Fibrinolytic Agents
  • Platelet Aggregation Inhibitors
  • Cyclooxygenase Inhibitors
  • Antipyretics

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

Anti-Inflammatory Agents, Non-Steroidal

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

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, see Searching Drugs or Chemicals in PubMed.

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Last Reviewed: May 13, 2019