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.