Six-Month Implementation Guideline

May 3, 2006

Beginning with this USP30-NF25, the United States Pharmacopeia-National Formulary and its Supplements will become official six months after being released to the public. The USP-NF, which is released on November 1 of each year, will become official on May 1 of the following year.

This change was adopted to give users more time to bring their methods and procedures into compliance with new and revised USP-NF requirements.

The table below describes the new official dates. The 2006 USP29-NF24, and the Supplements and Interim Revision Announcements (IRAs) to that edition, will be official until May 1, 2007, at which time the USP30-NF25 becomes official.

Publication Release Date Official Date Official Until
USP30-NF25 Nov. 1, 2006 May 1, 2007 May 1, 2008 (except as superceded by Supplements, IRAs, and Revision Bulletins)
First Supplement Feb. 1, 2007 Aug. 1, 2007 May 1, 2008 (except as superceded by Second Supplement, IRAs, and Revision Bulletins)
Second Supplement June 1, 2007 Dec. 1, 2007 May 1, 2008 (except as superceded by IRAs and Revision Bulletins)
USP31-NF26 Nov. 1, 2007 May 1, 2008 May 1, 2009 (except as superceded by Supplements, IRAs, and Revision Bulletins)

IRAs will continue to become official on the first day of the second month of the Pharmacopeial Forum (PF) issue in which they are published as final. For instance, IRAs published as final in the May-June PF (issue 3) will become official on June 1. This table gives the details of the IRAs that will apply to USP29-PF24 and USP30-PF25.

IRA* Release Date Official Date Revises
Jan. 1, 2007 IRA, PF 33(1) Jan. 1, 2007 Feb. 1, 2007 USP29-NF24 and its Supplements
Mar. 1, 2007 IRA, PF 33(2) Mar. 1, 2007 April 1, 2007 USP29-NF24 and its Supplements
May 1, 2007 IRA, PF 33(3) May 1, 2007 June 1, 2007 USP30-NF25
July 1, 2007 IRA, PF 33(4) July 1, 2007 Aug. 1, 2007 USP30-NF25 and First Supplement
Sept. 1, 2007 IRA, PF 33(5) Sept. 1, 2007 Oct. 1, 2007 USP30-NF25 and First Supplement
Nov. 1, 2007 IRA, PF 33(6) Nov. 1, 2007 Dec. 1, 2007 USP30-NF25 and its Supplements
Jan. 1, 2008 IRA, PF 34(1) Jan. 1, 2008 Feb. 1, 2008 USP30-NF25 and its Supplements
Mar. 1, 2008 IRA, PF 34(2) Mar. 1, 2008 April 1, 2008 USP30-NF25 and its Supplements

*NOTE—Beginning January 1, 2007, USP will cease identifying IRAs numerically (First, Second, etc.) and instead will designate them by the date on which they are published.

Revision Bulletins published on the USP Web site will continue to become official immediately upon publication, unless the Revision Bulletin specifies otherwise.

General Chapters, monographs, or monograph revisions that contain a specific official date shall continue to become official upon such specified date, which supercedes the general official date for the publication.

Please direct any comments and questions on this topic to the USP Executive Secretariat ().