NCIt definition : A xanthine derivative. Dyphilline exerts bronchodilator effects and to a lesser extent
vasodilator and diuretic properties. Dyphilline probably acts as a competitive inhibitor
of phosphodiesterase which leads to an increase in intracellular cAMP. This results
in relaxation of bronchial smooth muscle and other smooth muscles. Dyphylline may
also antagonize adenosine receptors. Dyphylline is used in the treatment of acute
bronchial asthma, chronic bronchitis and emphysema.;