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Cataloging and Metadata Management: Fundamentals of the NLM® Classification

Fundamentals of the NLM® Classification_index

Page 5 of 12

Drugs and Chemicals

  • Classify in the QV schedule works on pharmacology in general or on the pharmacology of individual drugs or types of drugs grouped according to their specific action. Subsections on toxicology and pharmacy are also available in the QV schedule
  • Classify works on an individual drug according to its principal action
  • Classify works on the use of an individual drug in the treatment of a particular disease with the disease
  • Classify works on the purely chemical or technological use of chemicals in LC’s QD or T schedules
  • Classify a drug derived from a plant with the drug and its action rather than with the plant
  • Classify works on vitamins in QU; on endocrine preparations in WJ, WK, or WP; and non-endocrine biologicals in QW
  • Classify the abuse of a drug in the appropriate WM number for the associated disorder
  • Classify works on the history of a specific drug with the drug


  • Form number 21, where available, is generally used for works about the specialty or profession. This includes works about ethics and peer review of a specific subject
  • General works about both the specialty and the disease are classed in the general works "100" class number

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