Development and Validation of Spectrophotometric Methods for Simultaneous Estimation of Valsartan and Hydrochlorothiazide in Tablet Dosage Form

Table 3

Results of recovery studies.

Recovery level	Initial amount (𝜇g/mL)		Concentration of std drug added (𝜇g/mL)		% Recovery (𝑛=3)
					Method 1		Method 2
	VAL	HCT	VAL	HCT	VAL	HCT	VAL	HCT
80%	20	2.5	16	1.6	98.89	100.55	99.51	99.63
100%	20	2.5	20	2.0	100.98	99.83	100.8	99.76
120%	20	2.5	24	2.4	100.73	100.19	101.0	100.3
Mean					100.20	100.19	100.40	100.20