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Interim Revision Announcements (IRAs)

IRAs are published in Pharmacopeial Forum (PF) as proposed IRAs. After a 90-day notice and comment period and approval by the relevant USP Expert Committee, IRAs are posted as official text in this location of the USP website, and are incorporated into the next available official publication (USP–NF or Supplement) at which time the posting may also be found in the Accelerated Revision History. Official IRAs are no longer published in PF. The PF posting dates, comment deadlines and IRA posting and official dates are outlined in the chart below.

PF

Proposed IRA Posting
Date in PF

Public Comment Due Date

Final IRA Posting Date on Web and USPNF.com

Incorporated into Print Publication

IRA Official Date

45(4) Jul. 1, 2019 Sep. 30, 2019 Nov. 22, 2019 N/A

Jan. 1, 2020

45(5) Sep. 1, 2019 Nov. 30, 2019 Jan. 31, 2020 N/A Mar, 1, 2020
45(6) Nov. 1, 2019 Jan. 31, 2020 Mar. 27, 2020 N/A May 1, 2020
46(1) Jan. 2, 2020 Mar. 31, 2020 May 29, 2020 N/A Jul. 1, 2020
46(2) Mar. 1, 2020 May 31, 2020 July 31, 2020 N/A Sep. 1, 2020
46(3) May 1, 2020 July 31, 2020 September 25, 2020 N/A Nov. 1, 2020
46(4) Jul. 1, 2020 Sep. 30, 2020 November 20, 2020 N/A Jan. 1, 2021

Monograph names listed below link to the combined IRA posting in which the announcement appeared.

New IRAs

All Posted IRAs

To view Accelerated Revisions by official date, please click here.