Deriphyllin Retard 150 Tablet is a bronchodilator used to treat symptoms of asthma and chronic obstructive pulmonary disease (COPD). It contains the active ingredients theophylline and etofylline, which help relax the muscles in the airways, improving airflow to the lungs. This action helps alleviate symptoms such as coughing, wheezing, and shortness of breath. Common side effects may include nausea, vomiting, headache, restlessness, dizziness, irregular heartbeat, and stomach upset. View ... Learn about Deriphyllin tablet uses for asthma and COPD, dosage for adults, side effects, storage tips and more in this simple and complete guide. Learn about Deriphyllin Retard uses, dosage, side effects, food interactions, and more. Get all the details about Deriphyllin Retard from MedicinesFAQ. Deriphyllin Retard 150 Tablet is used to treat asthma and chronic obstructive pulmonary disorder (COPD) , a lung disorder in which the flow of air to the lungs is blocked. It helps manage the signs and symptoms of asthma, bronchitis, and COPD, such as wheezing, coughing, and difficulty breathing.