Please see recent Pharmacopeial Discussion Group Working Procedures Changes here effective April 1, 2018.
USP versions of Stage 4 Harmonization includes monographs or general chapters that have completed stages 1-5 of the five-stage PDG pharmacopeial harmonization process resulting in an approved USP–NF text. Stage 4 adopted text is published here so that USP–NF users may become aware of its availability as a pharmacopeial standard and its targeted official date. See chart below for specific posting and official dates.