Table 4 Determination of the studied drugs in pharmaceutical dosage forms by the proposed HPLC–DAD method and application of standard addition technique

Exforge HCT^® Tablets, B.N. A518682, Each tablet is labelled to contain 25.0 mg HCT, 160.0 mg VAL & 10.0 mg AML

% Found ± SD ^a

99.47 ± 0.59

99.85 ± 0.56

–

–

–

Standard addition ^b % recovery of the pure added ± SD ^c

99.98 ± 0.37

99.31 ± 0.30

–

–

–

Atenoretic® Tablets, B.N.71047, Each tablet is labelled to contain 25.0 mg HCT, 50.0mg ATN & 2.5 mg AMI

% Found ± SD ^a

–

100.95 ± 0.25

99.13 ± 0.65

–

Standard addition ^b % recovery of the pure added ± SD ^d

–

–

99.83 ± 1.03

99.41 ± 0.69

–

Atacand plus® Tablets, B.N. 19015, Each tablet is labelled to contain 12.5 mg HCT, & 16.0 mg CAN

% Found ± SD ^a

–

–

–

–

98.80 ± 0.94

Standard addition ^b % recovery of the pure added ± SD ^e

–

–

–

–

98.70 ± 0.68