Prolonged Release Theophylline 200MG Tablets BP are used to treat asthma, chronic obstructive pulmonary disease (COPD), and other respiratory conditions. A bronchodilator like theophylline increases airflow to the lungs by relaxing the muscles in the airways. Long-lasting therapeutic effects are made possible by prolonged release tablets, which also eliminate the requirement for frequent dosing. Prolonged Release Theophylline 200MG Tablets BP is safe to consume. According to a healthcare professional's instructions, the tablets are typically taken once or twice daily.