Figure 3: a. Chromatogram of laboratory prepared mixture of Ambroxol HCl (50µg/ml) eluted at 16.345min, Guaifenesin (50µg/ml) at 10.4 min, Ambroxol HCl degradate (30µg/ml) at 3.93min and Guaicol (5µg/ml) at 8.4min. b. Chromatogram of Mucosin syrup with Ambroxol HCl (15µg/ml) and Guaifnesin (100µg/ml) together with two other peaks of the additives at 4.9 min and 12.7 min.