Simultaneous Estimation of Paracetamol, Ambroxol Hydrochloride, Levocetirizine Dihydrochloride, and Phenylephrine Hydrochloride in Combined Tablet Formulation by First-Order Derivative Spectrophotometry
Figure 4
Calibration curve for (a) PARA, (b) AMB, (c) LEVO, and (d) PHEN.