Development of Perphenazine-Loaded Solid Lipid Nanoparticles: Statistical Optimization and Cytotoxicity Studies

Table 1

Variables used in the Box-Behnken experimental design.

Independent variables (factors)		Levels
		-1	+1
Numeric factors	Concentration of Tween 80 ()	0.5 mg/ml	2.0 mg/ml
	Amounts of lecithin ()	100 mg	300 mg
	Amounts of GMS ()	100 mg	500 mg
Dependent variables (responses)