Corticosteroids, Methylxanthines and Diuretics: Concomitant treatment with xanthine derivatives, steroids, or diuretics may potentiate a possible hypokalemic effect of  beta2-agonists.
<xanthine derivatives, effect, beta2-agonists.>, <steroids, effect, beta2-agonists.>, <diuretics, effect, beta2-agonists.>