Deriphyllin Release 300mg Tablet is a medication used to treat respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD). It contains Theophylline, which helps to relax the muscles in the airways, making breathing easier. The "Release" formulation provides sustained effects over time, reducing the need for frequent doses. This pack typically contains 100 tablets. Always follow the prescribed dosage and consult a healthcare provider for proper use.