Table 2.

Analysis of laboratory prepared mixtures by the proposed methods

Methods	RSM	IDW	FSD	Direct
Concentration (µg/mL)	Found %a			Found %a
	MZH			PYH
MZH:PYH
5:10b	99.22	98.13	98.99	99.33
6:12b	100.37	98.70	100.73	101.54
15:15	101.21	99.33	99.41	98.43
40:20	99.39	100.12	98.09	100.78
50:25	100.84	100.70	99.75	100.04
Mean ± SD	100.21 ± 0.87	99.40 ± 1.03	99.40 ± 0.97	100.02 ± 1.21

^aAverage of five determinations

^bThe same concentration ratio in (Navoproxin plus^®), Vomidoxine B6^®, Dizirest B6^®)