Effect of mexilitine and lidocaine on ionic current and its peak in presence of constant voltage protocol. (A) Effect of mexiletine of different concentrations on ionic current are shown here, with mexiletine concentrations 0.001 M, 0.01 M, 0.1 M. (B) Effect of lidocaine is shown with concentrations 0.0005 M, 0.001 M, 0.01 M. (C) Peak current has been plotted at various constant depolarisations and varied for different concentrations of mexiletine. (D) Similar graph has been plotted for lidocaine like in (C).