Table IV.

Matrix system equation variables (equation 1)

	Parameter	Units	Description
	M/MT	Unitless	Fraction of drug released relative to total drug load
Design Parameters	A	mm2	Surface area
	L	mm	Membrane thickness
	fd	Unitless	Mass fraction of drug in film
	m	mg	Total film mass
	CA	mg/L	Drug concentration as mass of drug per unit volume of film
Drug property	Cs	mg/L	Solubility of active pharmaceutical ingredient at 25°C
Drug-specific empirical parameters	D	mm2/hr	Diffusion coefficient; dissolved drug through PCL matrix
	Y’	Unitless	Empirical correction factor