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

Table 3

Results of recovery study of Ambroxol.

Concentration level	Standard: amount added in sample solution in 𝜇g/mL	Amount recovered in 𝜇g/mL	% recovery
80%	6	5.98	99.71
80%	6	6.03	100.57
80%	6	6.00	100.04
100%	7.5	7.49	99.84
100%	7.5	7.56	100.84
100%	7.5	7.53	100.34
120%	9	8.95	99.43
120%	9	9.11	101.18
120%	9	9.01	100.14

Note: sample concentration was used 7.5 𝜇g/mL.