Pharmacology All of the following statements about lignocaine are true except A It blocks active sodium channels with more affinity than resulting sodium channels B It can cause cardiotoxicity C It is given orally for treatment of cardiac arhymias D Adrenaline increases the duration of action of lignocaine when used for infiltration anesthesia 💡 Explanation All of the following statements about lignocaine are true except ✓ Correct Answer: C. It is given orally for treatment of cardiac arhymias