Drug name

Irbesartan (%)

Losartan (%)

Telmisartan (%)

Valsartan (%)

Test 1

97.04

99.82

98.54

99.94

Test 2

99.44

99.73

99.06

99.63

Test 3

99.49

99.99

98.4

100.6

Test 4

99.28

99.97

101.2

99.89

Test 5

99.67

100.8

101.2

98.89

SD

1.1

0.43

1.41

0.62

Average

98.98

100.06

99.68

99.79

R.S.D

1.1

0.43

1.41

0.61

Method number

15

23

24

25

Table 7: Results from determination of Irbesartan, Losartan potassium, Telmisartan and Valsartan respectively in their dosage forms by reported method.