International Nonproprietary Names

International Nonproprietary Names


International Nonproprietary Names (INN) facilitate the identification of pharmaceutical substances or active pharmaceutical ingredients. Each INN is a unique name that is globally recognized and is public property. A nonproprietary name is also known as a generic name.


WHO has a constitutional mandate to "develop, establish and promote international standards with respect to biological, pharmaceutical and similar products".

The World Health Organization collaborates closely with INN experts and national nomenclature committees to select a single name of worldwide acceptability for each active substance that is to be marketed as a pharmaceutical. To avoid confusion, which could jeopardize the safety of patients, trade-marks should neither be derived from INNs nor contain common stems used in INNs. The selection and publication of INNs falls under the responsibility of the EMP/RHT/TSN team of the INN Programme.


Requesting an INN

Selection process of INNs
To apply for a new INN, please use the online application form
To select an appropriate stem

Published INN Lists

All INN publications


Online access to INN data

Promotion of INN and collaborations



For information on INN, please contact the

Dr R. Balocco Mattavelli
World Health Organization
1211 Geneva 27
Fax: +41 22 791 47 30


Biological Qualifier An INN Proposal

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User: INN_Users
PSW: bqinn2014
Domain: Datacol
Deadline 19th September 2014

INN Requests new fee US$ 12000 as of 1 July 2014

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Countdown requests for 59th INN Consultation : 0 requests still available!

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59th INN consultation

The 59th Consultation on International Nonproprietary Names (INN) for Pharmaceutical Substances will take place from:
14-16 October 2014.

Deadlines for submissions:
New INN requests
Monday, 11th August 2014.

Early submissions are encouraged and welcome.
Outstanding INN requests
Monday, 28th July 2014.

Open Sessions with INN stakeholders (on 14th October 2014)

Deadline on 16th June 2014

Training course on INN - 2015

Dates to be confirmed

Contact information
World Health Organization
International Nonproprietary Names
20 Avenue Appia
1211, Geneva 27
Tel: +41 22 791 1249
Fax: +41 22 791 4730