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	Available in French, Spanish and Arabic as well, you just change the language on the top or select the "category" on the bottom
	The School of INN is a WHO International Nonproprietary Name Programme initiative. Its role is to educate the pharmaceutical and medical students, as well as all other INN stakeholders on how to design and construct an INN. It also provides information to healthcare professionals and patients on how to interpret an INN. The school fosters the science of nomenclature and helps to cultivate a future generation of INN experts.

Available in French, Spanish and Arabic as well, you just change the language on the top or select the "category" on the bottom

The School of INN is a WHO International Nonproprietary Name Programme initiative.
Its role is to educate the pharmaceutical and medical students, as well as all other INN stakeholders on how to design and construct an INN. It also provides information to healthcare professionals and patients on how to interpret an INN. The school fosters the science of nomenclature and helps to cultivate a future generation of INN experts.

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"Stem in a pill" is a learning tool for the School of INN.

A useful approach to learning pharmacology using stems as a common basis for the pharmacological action.

MedNet INN services
The WHO MedNet offers on-line information services related to INNs which are free of charge to its members.
As a Member of MedNet INN, you will be able to search the INN database for INN names, for names published on recommended or proposed lists, and display the equivalent of the Latin INN name in Arabic, Chinese, English, French, Spanish and Russian. You will also be informed about any existing national names, ATC codes if assigned to INNs and the basic chemical information. The INN Status query allows for tracking the status of INNs within the INN process.

WHO INN Open Database for Proteins
The WHO INN Open Database for Proteins (INN ODP) offers on-line information services related to INNs sequences for proteins (only mAb) free of charge to its members.
As a Member of MedNet INN, you will be able to search INN names, sequences and execute BLAST queries.

The "How to.." session offers on-line information on how to access and use INN service like the advance search tool, the INN online application and others.

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Site announcements

The 81^st Consultation on International Nonproprietary Names (INN) for Pharmaceutical Substances will be on October 14-17 2025.

Deadlines for submissions:
New INN requests
Friday, 11^th July 2025.
Early submissions are encouraged and welcome.

Outstanding INN requests
Friday, 18^th July 2025.

SUBMITTING INN REQUESTS ONLINE IS MANDATORY, please click here...
The deadline for submissions of additional information of outstanding INN requests is: Friday, 18^th July 2025.

INN Session with INN stakeholders (on 14^th October 2025):
Mandatory deadline for EoI, LoP and presentations 1^st September 2025

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Dear SoINN members,

We are pleased to announce a new INN mednet Service.
All the INN MedNet user wil be able to access and search sequences for monoclonal antibodies (mAb) having an INN name using the new INN Open Database for Proteins (INN ODP).
We welcome any comments, which can be sent to innprogramme@who.int.

WHO INN Programme Secretariat

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Dear SoINN members,

We are pleased to share two recent INN publications:

INN Article in WHO Bulletin: Disease foci of pharmaceutical research and development as reflected in applications for International Nonproprietary Names, 1953–2022. Read here
INN Letter in The Lancet: New WHO INN for cell-based and gene-based substances: timing, usage, and simplicity. Read here.

We welcome any comments, which can be sent to innprogramme@who.int.

WHO INN Programme Secretariat

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Site announcements

81st Consultation on International Nonproprietary Names (INN) for Pharmaceutical Substances

INN Open Database for Proteins (INN ODP)

Updates on INN Publications