Research Article

Dissolution Rate Enhancement, Design and Development of Buccal Drug Delivery of Darifenacin Hydroxypropyl β-Cyclodextrin Inclusion Complexes

Table 3

Gibbs free energy of transfer ( ) for solubilization process of darifenacin in aqueous solutions of Hpβ-CD at 37°C.

Moles of β-CD in water (kJ/mol)

0.0025−0.614
0.005−1.08
0.01−1.867
0.015−2.506