Many universities with pharmaceutical programs (Peking University, Fudan, but also Western schools like USP, MIT) subscribe to the online ChP database. If you are a student or faculty, ask your librarian for remote access—often provided as searchable HTML/PDF.
claim to provide free PDF downloads, but user feedback often indicates these files have missing pages or contain incomplete content. Online Libraries : Some portions or descriptions may be found on or indexed in the NIH National Library of Medicine chinese pharmacopoeia 2020 english download pdf free