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Conjugated Estrogens

Type of Posting: Notice of Intent to Revise
Posting Date: 21-May-2025
Targeted Official Date: TBD 
Expert Committee: Small Molecules 5

In accordance with the Rules and Procedures of the Council of Experts, this is to provide notice that the Small Molecules 5 EC intends to revise the Conjugated Estrogens monograph.

The Expert Committee anticipates revising the Definition section of the monograph to include an option of using a solution of the estrogenic substances in alcohol, in addition to using a dispersion on a “suitable powdered diluent” specified in the currently official monograph.

It is anticipated that the proposed revision will be published as a Revision Bulletin upon the receipt of supporting technical and regulatory information, at a date to be determined. 

Should you have any questions, please contact Elena Gonikberg, Sr. Principal Scientist (eg@usp.org).