Deriphyllin OD 450 Tablet PR (Etofylline (231mg) + Theophylline (69mg) provided by us, is a type of medicine which is used in the treatment of asthma problems. This tablet work by relaxing the muscles in the airways and widen the airways. This makes breathing easier. This medication will not work for viral infections. Deriphyllin OD 450 Tablet PR (Etofylline (231mg) + Theophylline (69mg) helps relieve wheezing, emphysema and other respiratory problems. This medicine is also used to provide relaxment in the muscles of chest, lungs and safe to use.