Research Progress of Excipients of Dry Powder Inhalation
Dry powder inhalation(DPI)is a preparation that is administered through the lungs.It has many ad-vantages such as high bioavailability,fast onset of action,no first-pass effect,and no pollution.Many products have been marketed at home and abroad.Dry powder inhalation is one of the inhaler preparations,which belongs to the high-end chemical preparations and has huge market potential.At the same time,its high technical barriers and diffi-cult development have become a hot spot and difficulty in pharmaceutical industry research.This paper summarizes the research progress of excipients for Dry powder inhalation,hoping to provide a reference for the selection of excipi-ents in the formulation development of DPI.
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