Effects of ephedrine diminished by guanethidine, methyldopa, reserpine. Pressor effects enhanced by MAOIs. Xanthine may increase CNS stimulation caused by sympathomimetics & the excretion of lithium & phenytoin. Xanthine & β-blockers may be mutual antagonists.
R03DB04 - theophylline and adrenergics ; Belongs to the class of xanthines and adrenergics. Used in the systemic treatment of obstructive airway diseases.