Which statement about drug nomenclature is true?

• A. It includes brand names only
• B. It includes chemical name, generic name, and brand name
• C. It excludes proprietary names
• D. It is identical to therapeutic classification

Answer: (B)

Drug nomenclature refers to the naming system for drugs, including the chemical name, the generic (nonproprietary) name, and the brand (proprietary) name. The chemical name specifies the exact molecular structure, the generic name is the standardized nonproprietary name used in clinical and regulatory contexts, and the brand name is the marketing name owned by the manufacturer. All three forms are part of nomenclature, and the system is not identical to therapeutic classification, which groups drugs by mechanism or use. It also does not omit proprietary names, since brand names are a key part of how a drug is identified in practice. Therefore, including chemical, generic, and brand names best captures drug nomenclature.