The 82^nd Consultation on International Nonproprietary Names (INN) for Pharmaceutical Substances will be on April 21-24 2026.

Deadlines for submissions:
New INN requests
Friday, 13^th February 2026.
Early submissions are encouraged and welcome.

Outstanding INN requests
Friday, 20^th February 2026.

SUBMITTING INN REQUESTS ONLINE IS MANDATORY, please click here...  
The deadline for submissions of additional information of outstanding INN requests is: Friday, 20^th February 2026.

INN Session with INN stakeholders (on 21^st April 2026):
Mandatory deadline for EoI, LoP and presentations 20^th March 2026  

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

Dear SoINN members,

We are pleased to share two recent INN publications:

1. INN Article in WHO Bulletin: Disease foci of pharmaceutical research and development as reflected in applications for International Nonproprietary Names, 1953–2022. Read here
2. 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