Banana Boat Soothacaine Spray Gel - Pharmacological action Lidocaine is an antiarrhythmic agent of class IB, local anesthetic, a derivative of acetanilide. This medication has membrane stabilizing activity. Lidocaine causes a blockade of sodium channels of excitable membranes of neurons and the membrane of cardiomyocytes. This drug reduces the duration of the action potential and effective refractory period in Purkinje fibers, inhibits their automaticity. In this case, lidocaine inhibits electrical activity in depolarized,...