PF is a free bimonthly online journal in which USP publishes proposed revisions to USP–NF for public review and comment.

New issues are posted online every two months at the beginning of the month. The comment period is 90-days and ends on the last day of the month (View current PF Publication and Comment Schedule).

Information Featured in PF

To make it easier for users to identify and respond to proposed changes to USP–NF standards, PF now contains only proposals for which USP is seeking public comment and information, including:

• In-Process Revisions
• Proposed Interim Revision Announcements (IRAs)
• PDG Harmonization Proposals (Stage 4)
• Stimuli Articles

(Please note: a one-time registration is required to access PF.)

In addition, PF provides access to previously published issues of PF Online dating back to 2002. Other information previously in PF, including official text (final IRAs), is now published on the USP website or in other publications.

Where to Find Items Previously in PF

Click on the links below to access information now located on USP’s website:

• Policies and Announcements
• Interim Revision Announcements (IRAs)
• IRA Reference Standard Information
  • New USP Reference Standards
  • Unavailable First Time Official Reference Standards
• Errata
• PF Publication and Comment Schedule
• Priority New Monographs
• Previous PF Proposals Still Pending
• Canceled Proposals
• PDG Harmonization Process and Harmonized Standards (Stage 6)
  • Pharmeuropa Online
  • Japanese Pharmacopoeial Forum
• Chromatographic Columns
• Nomenclature will be updated through the annual USAN publication and will not be included on the USP website