Abstract: A composition, suitable for an orally administered formulation, contains a GLP-1 analogue and, particularly, a hydrophobic ion-pair of a GLP-1 analogue and an oil phase. The pharmaceutical composition for oral administration forms an emulsion surrounding the hydrophobic ion-pair when exposed to a water phase, so as to be stably absorbed without being decomposed by digestive enzymes, and thus provides an effective and prolonged pharmacological effect. Methods for producing the composition for oral administration are also disclosed.

Abstract: One aspect provides a physiologically based pharmacokinetic core model which may be commonly applied to two or more compounds that share the same core structure, and a method of constructing the physiologically based pharmacokinetic core model. According to the physiologically based pharmacokinetic core model and the method of constructing the physiologically based pharmacokinetic core model, there is the effect of conducting exposure evaluation simply only by deriving a distribution coefficient, without constructing a separate PBPK model for each individual compound.