Development and Validation of First-Order Derivative Spectrophotometry for Simultaneous Determination of Levocetirizine Dihydrochloride and Phenylephrine Hydrochloride in Pharmaceutical Dosage Form

Table 3

Accuracy data.

Drug	Level	Amount taken (total) (μg/mL)	Amount added; (μg/mL)	Amount; recovered; (μg/mL)	% Recovery ± SD
LCT	80%	14.4	6.4	14.35	99.69±0.450
	100%	16	8	16.003	100.01±0.405
	120%	17.6	9.6	17.51	99.52±0.370
PHE	80%	28.8	12.8	28.82	100.06±0.765
	100%	32	16	31.85	99.53±1.066
	120%	35.2	19.2	35.04	99.54±0.625