From: Development and validation of stability indicating UPLC method for the simultaneous estimation of triamterene and hydrochlorothiazide in combined dosage forms using quality by design approach
Percentage concentration
Area*n
Amount added in mg
Amount found in mg
Percentage recovery
Mean recovery
50
422,827
37.5
37.89
1.1.05
100.75
100
842,991
75
75.55
100.73
150
1,261,001
112.5
113.01
100.45