डेक्सट्रोमेथॉर्फन और क्विनिडिन और डाइसोपाइरामाइड का इंटरैक्शन

Concomitant Antiarrhythmic Therapy The concomitant use of Norpace or Norpace CR with other Type 1A antiarrhythmic agents (such as quinidine or procainamide), Type 1C antiarrhythmics (such as encainide, flecainide or propafenone), and/or propranolol should be reserved for patients with life-threatening arrhythmias who are demonstrably unresponsive to single-agent…

Patients who have evidenced prolongation of the Q-T interval in response to quinidine may be at particular risk.

Concomitant administration of Norpace and quinidine resulted in slight increases in plasma disopyramide levels and slight decreases in plasma quinidine levels.

Other antiarrhythmic drugs (e.g., quinidine, procainamide, lidocaine, propranolol) have occasionally been used concurrently with Norpace.

Anticholinergic effects of quinidine: Monitor for worsening in myasthenia gravis and other sensitive conditions.

Anticholinergic Effects of Q uinidine Monitor for worsening clinical condition in myasthenia gravis and other conditions that may be adversely affected by anticholinergic effects.