Drug name Average µg/ml Average  % RSD Amlodipine besylate 5.04 100.8 0.30% Losartan potassium 49.60 99.20 0.70% Valsartan 78.9 98.63 0.79% Atorvastatin calcium 9.91 99.18 0.33%

Table 1: Repeatability of Amlodipine besylate, Losartan potassium, Valsartan and Atorvastatin calcium respectively.