How Ephedra/Ma-Huang interacts with Oral and inhaled anti-asthmatic medications

Interaction type: Interactions

Interaction rating: Potential/Theoritical

Studies report that ephedra may act in the body like some of these medications, which may alter the effects of these medications and possibly the dose needed for treatment. Use with caution. (1) (2)

These drugs include albuterol, levalbuterol, salmeterol, terbutaline, ephedrine, epinephrine, formoterol fumarate, bitolterol mesylate, isoetharine, metaproterenol, pirbuterol, theophylline, aminophylline, oxtriphylline, dyphylline, ipratropium, zafirlukast, montelukast, zileuton, cromolyn sodium, nedocromil sodium, beclomethasone dipropionate, triamcinolone acetonide, flunisolide, budesonide, fluticasone propionate, mometasone furoate monohydrate


  1. Faurshou M, et al. The bronchodilating effect of ephedrine tablets in bronchial asthma. Ugeskr Laeger. Nov1993;155(46):3784-5.
  2. View Abstract: Laitinen LA, et al. A comparison of the bronchodilator action of pseudoephedrine and ephedrine in patients with reversible airway obstruction. Eur J Clin Pharmacol. 1982;23(2):107-9.