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Abstract
In developing new drugs, drug permeability assessment is crucial. Lead compounds exhibiting inadequate permeability often produce low bioavailability, rendering them inappropriate as drugs. The cocrystallization technique is a valuable tool for optimizing the physical and chemical properties of active pharmaceutical ingredients (APIs) and enhancing drug properties. This technique involves the introduction and weak interaction with cocrystal formers to produce supramolecular substances without altering the chemical structure of APIs, effectively improving their solubility and permeability and thereby significantly increasing their bioavailability. Consequently, drug cocrystal research has become a focal point for researchers in drug development. This study provides a comprehensive overview of four commonly employed methods for evaluating drug permeability and summarizes the applicability of each method to provide a reference for improving and refining the permeability evaluation method of drug cocrystals.
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