INN Stem Book Addendum 202310-2018
Addendum to "The use of stems in the selection of International Nonproprietary names (INN) for pharmaceutical substances
9 October 2023
| Publication

Overview
The document "The Use of Common Stems in the Selection of INNs" is intended primarily for persons and
companies applying to the WHO INN Programme for the selection of an INN for a new pharmaceutical substance
and has been designed to assist in the process of devising a suitable proposal. It will also be of assistance to
institutions and specialists involved in the review of proposed INNs, including drug regulatory authorities,
pharmaceutical manufacturers, patent offices and trade mark officers as well as for scientists, teachers, health
professionals and other persons interested generally in drug nomenclature.
WHO Team
INN and Classification of Medical Products (INN)
Editors
International Nonproprietary Name (INN) Programme
Number of pages
12
Reference numbers
WHO Reference Number: INN Working Document 23.573
Copyright
© World Health Organization 2023