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Removal of UNII Codes in Excipient Monographs in USP 42–NF 37 Online

Type of Posting: General Announcement

Posting Date:     31–Aug–2018

This is a general announcement to let users know that USP will no longer display UNII Codes in excipient monographs in the USP–NF Online.  USP recognizes that there are ongoing discussions around the utility of UNII codes in excipient monographs generally, and we wish to clarify that no UNII codes are considered to be associated with excipient monographs in the USP–NF Online pending further stakeholder engagement on this topic. The suppression of UNII codes for excipient monographs will be effective November 1, 2018, which coincides with the publication of USP 42–NF 37. USP is seeking to open a dialogue with stakeholders to determine the longer-term path forward for the use of UNII codes for excipients. Please contact Catherine Sheehan ( with questions, comments, or to engage with USP on this subject. 

This general announcement is an update to the October 28, 2016 General Announcement on UNII Code display in monographs.