Publication and Comment Schedule

All official revisions are published in the annual edition or Supplements to USP-NF (twice yearly). Between these publications, official revisions are published in Pharmacopeial Forum (PF) in the Interim Revision Announcement section and incorporated in the upcoming Supplement or book. They may also be published as Revision Bulletins on www.usp.org in the "New Official Text" section. The official publication in which an Interim Revision Announcement is incorporated depends upon publication deadlines. The electronic version of USP-NF is updated as each Supplement becomes available and, therefore, contains all official text up to and including the contents of the latest Supplement. The table below outlines the publications and their release and official dates, and the book or supplement which supersedes them.

PUBLICATION SCHEDULE FOR USP –NF

Publication	Release Date	Official Date	Superseded by
1st Supplement to USP 32-NF 27	Feb. 1, 2009	Aug. 1, 2009	2nd Supplement to USP 32-NF 27
IRA PF 35(2)	Mar. 1, 2009	Apr. 1, 2009	2nd Supplement to USP 32-NF 27
IRA PF 35(3)	May 1, 2009	June 1, 2009	USP 33-NF 28
2nd Supplement to USP 32-NF 27	June 1, 2009	Dec. 1, 2009	USP 33-NF 28
IRA PF 35(4)	July 1, 2009	Aug. 1, 2009	1st Supplement to USP 33-NF 28
IRA PF 35(5)	Sept. 1, 2009	Oct. 1, 2009	1st Supplement to USP 33-NF 28
IRA PF 35(6)	Nov. 1, 2009	Dec. 1, 2009	2nd Supplement to USP 33-NF 28
USP 33-NF 28	Nov. 1, 2009	May 1, 2010	1st Supplement to USP 33-NF 28
IRA PF 36(1)	Jan. 1, 2010	Feb. 1, 2010	2nd Supplement to USP 33-NF 28
1st Supplement to USP 33-NF 28	Feb. 1, 2010	Aug. 1, 2010	2nd Supplement to USP 33-NF 28

CUMULATIVE EDITIONS

USP–NF is available in print, CD, and online formats. For the CD and online formats, each new edition or Supplement integrates content from all previous editions to date.

INTERIM REVISION ANNOUNCEMENTS

The USP welcomes and encourages interested parties to submit comments and data regarding potential, proposed, or adopted (official) standards. In accordance with the Rules and Procedures of the 2005-2010 Council of Experts, USP has implemented a 90-day comment period by providing a deadline for each issue of PF unless otherwise stated in the individual briefing. The listing of comment period deadlines and the targeted official publications appears below.

Publication and Comment Schedule

Pharmacopeial Forum	Comment Deadline	Targeted Official Publication	Publication Date	Official Date
PF 35(2)	June 15, 2009	USP 33-NF 28 1st Supplement	February 2010	August 2010
PF 35(3)	August 15, 2009	USP 33-NF 28 1st Supplement	February 2010	August 2010
PF 35(4)	October 15, 2009	USP 33-NF 28 2nd Supplement	June 2010	December 2010
PF 35(5)	December 15, 2009	USP 33-NF 28 2nd Supplement	June 2010	December 2010
PF 35(6)	February 15, 2010	USP 34-NF 29	November 2010	May 2011
PF 36(1)	April 15, 2010	USP 34-NF 29	November 2010	May 2011