<p>Indacaterol shows interaction with Adrenergic Drugs, Xanthine Derivatives, Steroids, or Diuretics. Concomitant treatment with xanthine derivatives, steroids, or diuretics may potentiate any hypokalemic effect of Indacaterol. The ECG changes or hypokalemia that may result from the administration of non-potassium sparing diuretics (such as loop or thiazide diuretics) can be acutely worsened by &beta;2-agonists. Indacaterol, as with other &beta;2-agonists, should be administered with extreme caution to patients being treated with monoamine oxidase inhibitors, tricyclic antidepressants, or other drugs known to prolong the QTc interval. &beta;-adrenergic receptor antagonists (beta-blockers) and Indacaterol may interfere with the effect of each other when administered concurrently.</p>