Interim Revision Announcements (IRAs)

Interim Revision Announcements (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

42(1)Jan. 4, 2016Mar. 31, 2016May 27, 2016Jul. 1, 2016
42(2)Mar. 1, 2016May. 31, 2016Jul. 29, 2016Sep. 1, 2016
42(3)May. 2, 2016Jul. 31, 2016Sep. 30, 2016Nov. 1, 2016
42(4)Jul. 1, 2016Sep. 30, 2016Nov. 25, 2016Jan. 1, 2017

Monograph names listed below link to the combined IRA posting in which the announcement appeared. Beginning in March 2011, each monograph name will link to the individual IRA.

Interim Revision Announcement IconNew IRAs

  • Ceftriaxone Sodium (posted 24–Jun–2016; official 01–Aug–2016; updated 06–Jul–2016*)
    *The Ceftriaxone Sodium IRA posted on June 24, 2016 had the incorrect official date. The IRA was reposted on July 6, 2016 with the correct official date of August 1, 2016.
  • Ceftriaxone for Injection (posted 24–Jun–2016; official 01–Aug–2016; updated 06–Jul–2016**)
    **The incorrect version of the Ceftriaxone for Injection IRA was posted on June 24, 2016. A corrected Ceftriaxone for Injection IRA was posted on July 6, 2016, which includes revisions to Table 1 in the Organic Impurities section.  In addition the official date was corrected to be August 1, 2016.

All Posted IRAs