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"Expectorants" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.

MeSH information
Agents that increase mucous excretion. Mucolytic agents, that is drugs that liquefy mucous secretions, are also included here.

This graph shows the total number of publications written about "Expectorants" by people in the URMC Research Network by year, and whether "Expectorants" was a major or minor topic of these publication.