Table IV.

Modeling of Dissolution Profiles

Tablet system	Zero-order		First-order		Higuchi model		Korsmeyer-Peppas model			Hixson-Crowell model
	R 2	K	R 2	K	R 2	K	R 2	n	K	R 2	K
Core + outer layer	0.892	0.145	0.914	−0.006	0.958	3.773	0.971	0.281	20.04	0.944	−0.012
Core	0.892	0.145	0.933	−0.001	0.958	3.773	0.917	1.23	0.05	0.920	−0.002