Development and Validation of High Performance Liquid Chromatography Method for Simultaneous Estimation of Ambroxol and Doxofylline in Their Combined Tablet Dosage Form

Table 1

Precision data for Ambroxol and Doxofylline.

Drug	Concentration (𝜇g/mL)	Intraday (𝑛=3) average ± SD	C.V.	Interday (𝑛=3) average ± SD	C.V.
Ambroxol	3.75	209.47±1.71	0.82	209.88±2.29	1.09
	7.50	419.91±4.43	1.05	421.32±4.84	1.15
	11.25	629.12±6.11	0.97	627.44±5.84	0.93
Doxofylline	50	1689.00±16.78	0.99	1691.66±14.54	0.86
	100	3384.19±40.70	1.20	3396.37±35.26	1.04
	150	5067.86±38.96	0.77	5055.92±55.21	1.090