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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). 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.


Proposed IRA Posting
Date in PF

Public Comment Due Date

Final IRA Posting Date on Web

IRA Official Date

43(1) Jan. 1, 2017 Mar. 31, 2017 May. 26, 2017 Jul. 1, 2017
43(2) Mar. 1, 2017 Jul. 31, 2017* Aug. 25, 2017 Oct. 1, 2017
43(3) May. 1, 2017 Jul. 31, 2017 Sep. 29, 2017 Nov. 1, 2017
43(4) Jul. 1, 2017 Sep. 30, 2017 Nov. 22, 2017**  Jan. 1, 2018

* Extended due to technical issues. See Compendial Notice.

** Posting date adjusted to accommodate Thanksgiving holiday.

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

New IRAs

The following IRAs were published for comment in in PF 43(2):   

  • Valine
  • Amlodipine and Valsaratan Tablets
  • Amlodipine, Valsartan, and Hydrochlorothiaide Tablets
  • Pyridostigmine Bromide Tablets
  • Levocetirizine Dihydrochloride 

These were previously scheduled to post on July 28, and become official September 1, 2017; however, because the comment deadline for PF43(2) was extended until July 31st, the new anticipated posting and official date for these IRAs would be August 25, 2017th and October 1, 2017 respectively.

All Posted IRAs