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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

44(4) Jul. 1, 2018 Sep. 30, 2018 Nov. 30, 2018 Second Supplement to USP 42–NF 37 Jan. 1, 2019
44(5) Sep. 1, 2018 Nov. 30, 2018 Jan. 25, 2019 Second Supplement to USP 42–NF 37 Mar. 1, 2019
44(6) Nov. 1, 2018 Jan. 31, 2019 Mar. 29, 2019 USP 43–NF 38 May 1, 2019
45(1) Jan. 2, 2019 Mar. 31, 2019 May 31, 2019 USP 43– NF 38 Jul. 1, 2019
45(2) Mar. 1, 2019 May 31, 2019 Jul. 26, 2019 First Supplement to USP 43– NF 38 Sep. 1, 2019
45(3) May 1, 2019 Jul. 31, 2019 Sep. 27, 2019 First Supplement to USP 43–NF 38 Nov. 1, 2019
45(4) Jul. 1, 2019 Sep. 30, 2019 Nov. 30, 2019 Second Supplement to USP 43–NF 38 Jan. 1, 2020

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

New IRAs

All Posted IRAs