Public Services Division
MeSH Subheading Qualifier Hierarchies dealing with drugs (click on subheadings where appropriate to see additional indented hierarchal subheadings and see the MeSH Subheadings 2 letter abbreviations table).
adverse effects - abbreviated ae
analysis - abbreviated an
chemically induced - abbreviated ci
chemistry - abbreviated ch
classification - abbreviated cl
drug effects - abbreviated de
drug therapy - abbreviated dt
etiology - abbreviated et
history - abbreviated hi
organization and administration - abbreviated og
pathogenicity - abbreviated py
pharmacology - abbreviated pd
physiology - abbreviated ph
psychology - abbreviated px
statistics and numerical data - abbreviated sn
therapeutic use - abbreviated tu
therapy - abbreviated th
veterinary - abbreviated ve
An example for cancer drug therapy may be: Neoplasms/dt[mh] using the abbreviation or spelling out the subheading Neoplasms/drug therapy[mh]. Substitute [majr] for [mh] to narrow retrieval to articles with this topic as the main focus. Also consider using the drugs: Antineoplastic Agents [mh] or specific drugs pharmacological action: Antineoplastic Agents [pa].
Pharmacological Action [PA]. Substances known to have a particular pharmacologic action. Each pharmacologic action term index is created with the drug/substance terms known to have that effect. This includes both MeSH terms and terms for Supplementary Concept Records. A list of Pharmacological Actions is available.