A simple, rapid and accurate high performance liquid chromatography method is described for determination of carbocisteine from pharmaceutical formulation. The separation of drug was achieved on (Amino Propyl Silane) APS-2 hypersil (250 X 4.6 mm) 5μ column. The mobile phase consisted a mixture of buffer and methanol (65:35 v/v). The buffer was a mixture of 0.02 M potassium dihydrogen phosphate monobasic and 0.01 M 1-hexane sulphonic acid sodium salt anhydrous. The detection was carried out at wavelength 210 nm. Buffer containing 0.02 M potassium dihydrogen phosphate monobasic and 0.01 M 1-hexane sulphonic acid sodium salt anhydrous used as a diluent. The method was validated for system suitability, linearity, accuracy, precision, robustness, stability of sample solution. The method has been successfully used to analyze carbocisteine from pharmaceutical formulation.