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.