Dyphylline is a phosphodiesterase inhibitor used in the treatment of respiratory disorders like asthma, cardiac dyspnea, and bronchitis. Dyphylline is a xanthine derivative with bronchodilator and vasodilator effects. It also acts as an adenosine receptor antagonist. 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.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.