Drug name 1st day μg/ml 2nd day μg/ml 3rd day μg/ml Pooled average Pooled average % RSD Irbesartan 150.06 151.83 150.48 150.79 100.52 0.61% Losartan potassium 49.97 50.78 50.18 50.31 100.63 0.83% Telmisartan 80.16 81.10 80.73 80.66 100.83 0.59% Valsartan 79.96 81.01 79.67 80.21 100.26 0.88%

Table 3: Intermediate precision of Irbesartan, Losartan potassium, Telmisartan and Valsartan respectively.